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In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Police have arrested one person in connection with the murder of Sagar Barman, a 10-year-old garment worker in a Narayanganj factory who was killed from air pushed through his rectum. Zobeda Textile and Spinning Mill’s administrative officer Nazmul Huda was arrested yesterday morning, Rupganj Police Station Officer-in-Charge Ismail Hossain told the Dhaka Tribune. During a visit at the factory yesterday, police also found 24 child workers in the mill and sent them home. At least 500 to 700 children were employed there, police said. The local factory inspection office said there was a case ongoing in labour court against the factory for employing children. Meanwhile an autopsy at Dhaka Medical College confirmed that Sagar had been killed from air pushed into his body with a strong force. On Sunday, Sagar’s family recovered him from the factory in Rupganj’s Jatramura after hearing someone was pushing air into his body with a compressor. He was rushed to Dhaka Medical College Hospital where doctors pronounced him dead. That night, his father Ratan Barman, also an employee of the factory, filed a case against four officers of the mill and six unknowns at the Rupganj Station. 
  
 Arrested man on remand 
  
 OC Ismail Hossain said Ratan Barman had named Administrative Officer Nazmul Huda, Production Manager Harunur Rashid, Senior Production Manager Azahar Imam Sohel and Assistant Production Manager Rashidul Islam in the case. He also accused six unnamed linemen and supervisors from the factory. Police said arrested Nazmul has been working in Zobeda Textiles for eight years and he hails from Gopalganj. Narayanganj Judicial Magistrate Ashiq Imam granted police seven days to interrogate Nazmul following a hearing yesterday afternoon. Ratan in his case said he and his son worked in the factory in the morning shift. Nazmul Huda and the linemen and supervisors regularly abused both him and Sagar over petty issues. These men had inserted an air compressor tube into Sagar’s rectum and murdered him, he said. Police said the others accused in the case were on the run and their phones had been turned off. 
  
 Sagar killed by air through rectum 
  
 Dhaka Medical College Forensic Department Asst Prof AKM Shafiuzzaman Khair told reporters after an autopsy on Sagar’s body yesterday afternoon that air had been pushed through the child’s rectum so forcefully that various parts of his body, even his face and arms, had bloated up. That was what caused his death, he said. The doctor added that the autopsy had found that the child’s rectal area had been severely damaged. During autopsy, gases came out from the victim’s stomach. “Since the gas cannot be tested here, we have sent blood and viscera to be tested,” Shafiuzzaman added. The family took the body and left the hospital around 3pm. Zobeda Textile’s owner Mozammel Haque Bhuiyan could not be reached for comment. Dhaka Tribune was able to speak to the factory’s Administrative Officer Kibria Hossain, who claimed that Sagar may have died while he was trying to ‘clean his mouth with the air compressor’. He however, refused to comment on the child worker issue. ||||| In the complaint, the father accused four identified and four other unknown people at the mill of being involved in the boy’s death, including Mr. Huda. 
  
 According to the police complaint, Mr. Barman said those men and several other linemen and supervisors used to speak abusively to him and his son, and beat them when there were small mistakes in their work. He said that his son was killed because he had protested about the abuse. 
  
 The complaint accused the factory’s owners, Mozammel Haque Bhuiyan, Mazharul Islam Bhuiyan, Azharul Haque Bhuiyan and Zafar Hossain Bhuiyan, of using child laborers in their factory. 
  
 The factory owners and supervisors could not be reached for comment on Monday night. 
  
 Mr. Hossain said the police were still investigating how the air got into the boy’s body, and whether “air was pumped by someone else into his body through the rectum or air went into his body through his mouth when he was cleaning his body.” 
  
 He said the mill was established in 1985 and produced yarn from cotton, which was sold at local markets to make fabric. 
  
 About 3,000 workers are employed at the mill, an estimated 10 percent of them children. They were not recruited but were employed at the request of the adult employees who wanted “some light work” for their children to perform so that “they can earn some money for their family,” Mr. Hossain said. 
  
 The management hired the children as a “humanitarian” gesture, according to Mr. Hossain. 
  
 Sagar had earned 3,100 taka, or about $40 a month. 
  
 The air compressors were mostly used to clean dust from machines and accessories in the factory, Mr. Hossain said. But he said the boy and some other workers also used the compressors to clean themselves of factory dust. ||||| Bangladesh police Monday arrested a spinning mill worker for allegedly torturing a nine-year-old boy to death with an air compressor, the second such incident in less than a year, officers said. 
  
 Sagar Barman died of internal injuries in hospital late on Sunday after his family alleges eight mill workers were involved in forcing the compressor into the boy’s rectum and turning on the machine. 
  
 The boy also worked at the mill in Rupganj town, just south of Dhaka, one of millions of child workers in impoverished Bangladesh, many of them employed in hazardous industries. 
  
 “We have arrested the mill’s assistant administrative officer. We’ve also launched a hunt for others accused including three production managers who were named in the case,” Rupganj police chief Ismail Hossain said. 
  
 Police inspector Jasim Uddin, who is investigating the killing, said senior employees had been “angry” at the boy and his father who also worked there for entering a restricted area of the mill. 
  
 The incident comes after a 13-year-old boy was killed in the same way last August in the southwestern city of Khulna, sparking furious protests demanding justice for the child. 
  
 Two men have been sentenced to death over that case. 
  
 Nationwide demonstrations were also held last July over the lynching of another 13-year-old boy, who was tied to a pole and beaten to death after he was accused of stealing a bicycle. 
  
 Six men were sentenced to death for that killing in the city of Sylhet, which was captured on video and uploaded onto social media. The boy was heard pleading for his life. 
  
 On Sunday, the boy had apparently gone to clean near a compressor at Zubaida Textile Mills, one of the largest in Bangladesh, supplying yarn to textile factories which make clothes for Western retailers. 
  
 “They inserted a high pressure nozzle through his rectum and turned on the machine. He fell seriously ill immediately and was transferred to a Dhaka hospital where he died hours later,” Hossain said. 
  
 Police was also probing why the boy was working at the factory, Hossain said. 
  
 Factories are barred from hiring workers under the age of 18. But Unicef estimates that 4.9 million children aged from five to 14 are working in numerous industries in Bangladesh, many in hazardous conditions and for little pay. |||||
Output:
A 9-year-old factory worker in Bangladesh was killed Sunday when other employees allegedly inserted an air compressor's nozzle into his rectum and turned it on, AFP reports. Police say senior employees were upset Sagar Barman went into a restricted area of Zobeda Textile Mill in Dhaka. But Sagar's father, also a worker at Zobeda, tells the New York Times his son was killed because he complained about the beatings they received from senior employees over small mistakes. An assistant administrative officer was arrested Monday in connection with Sagar's death, and police are looking for seven more employees said to have been involved. An administrative officer at Zobeda denies Sagar was killed, telling the Dhaka Tribune Sagar may have died when he tried to use the air compressor to clean his mouth. Despite child labor being illegal in Bangladesh, UNICEF estimates there are 4.9 million children under the age of 14 working in factories and elsewhere. Sagar had been working at Zobeda for seven months when he was killed. “I thought, as we are poor, it will be helpful to run our family if my son Sagar can do some work in this factory,” his father tells the Times. Two-dozen child workers were sent home from Zobeda, which supplies yarn for Western clothing, when police came to investigate Sagar's death. It's believed hundreds of children work there. Sagar is the second child worker in Bangladesh to be killed by having an air compressor inserted into his rectum this year. Two men were sentenced to death for doing the same thing to a 13-year-old boy in another town last August.