By. Lucy Crossley. PUBLISHED:. 05:47 EST, 24 October 2013. |. UPDATED:. 02:11 EST, 25 October 2013. Police have launched a murder inquiry after the death of a two-year-old boy who was admitted to hospital with serious head injuries. A 25-year-old woman, believed to be the boy's mother, and a 21-year-old man thought to be her partner were arrested on suspicion of killing the toddler. The little boy, who has not been named had been originally admitted to the University Hospital Coventry on Monday with head injuries, and was later transferred to Birmingham Children’s Hospital for specialist treatment. Investigation: Police were questioning a 25-year-old woman and a 21-year-old man over the death of a two-year-old boy who died after he was admitted to University Hospital in Coventry with serious head injuries. Probe: A PCSO guards the Coventry home where the tragic little boy was believed to have lived with his mother. West Midlands Police said a 21-year-old man and a woman, 25, were being held on suspicion of murder following the boy's death. Police were alerted by hospital staff and the man, who is not the boy’s biological father, was arrested in the early hours of Tuesday morning on suspicion of assault. The boy’s mother was also arrested on suspicion of assault. At around noon on Tuesday the young boy was pronounced dead at hospital and the couple were re-arrested on suspicion of murder. A. forensic post-mortem examination, which took place yesterday afternoon,. was inconclusive and further tests are required to establish a cause of. death. The man and woman, who lived in the same street in Coventry, both remained in custody today. Police have cordoned off a house on the. road while forensic experts conducted a finger-tip search of the. property. A PCSO stands guard outside a house in Coventry, which police are searching in connection with the investigation into the death of a two-year-old boy. Neighbours said that they had telephoned social services to. raise concerns about the little boy, who was believed to have lived at. the house with his mother. However, Coventry City Council said they had no involvement with the child. The woman’s next door neighbour, who did not wish to be named, said they. had logged a complaint with social services after hearing arguments. through the walls. He said: ‘There were quite a lot of loud rows, sometimes late at night. ‘It can’t have been a good environment for the little boy. ‘We rarely saw him though, she didn’t really speak to any neighbours. ‘We didn’t even know his name.’ Another neighbour added that he had seen a string of different men entering the property. Neighbours said that they had telephoned social services to raise concerns about the little boy, who was believed to have lived at the house with his mother. He said: ‘I think she had five or six different blokes on the go, you’d see a different man in that house every day. ‘Once she locked herself out of the house when the little boy was still inside. ‘I know the neighbours phoned up social services but I don’t know if they did anything about it.' Neighbour Oche Agbo, 23, said he had witnessed a disturbance in the street on Monday night, just hours before the boy was taken to hospital. He said: ‘I saw a man storming up and down the street in front of the house at about 11pm. ‘He was raging, really screaming and shouting about something. ‘He was clearly upset about something. The little boy, who has not been named, had been initially admitted to the University Hospital Coventry on Monday with head injuries. The boy was taken to Birmingham Children's Hospital for specialist care but later died. ‘I didn’t get a good look at him but he seemed like he was a young guy.' A single police officer stood guard outside the house yesterday while police carried out searches. A mum-of-three, who was too distressed to speak, left a teddy bear at. the scene with a note attached which read: ‘RIP little one, another. angel gone to spread there (sic) wings. xxx’ A Coventry City Council spokesman said: “We can confirm that the child was not known to us. ‘We were extremely sad to hear the news of this tragic death. ‘As a murder enquiry is now underway and an investigation is ongoing we. are unable to comment further, although we will, of course, co-operate. fully with West Midlands Police if necessary during their. investigation.’

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Woman, 25, thought to be boy's mother arrested over alleged killing. Man, 21, thought to be her partner also questioned by police probing death. Boy, 2, had been taken to hospital with head injuries and later died. Police search home in Coventry where couple both lived.

By. Chris Pleasance. Two teenagers accused of stealing three motorbikes in Bolivia were tied to a tree covered in fire ants. Two men nearly died in Bolivia after they were accused of stealing motorbikes by angry Amazonian villagers who tied them to a tree swarming with fire ants. The men, aged 18 and 19, were accused of swiping three bikes worth $3,700 (£2,200) from a village near Cochabambain, central Bolivia. Furious locals kept them captive for three days, demanding money to replace the vehicles, and eventually threw the men on to the ant nest to force their families to pay up. After the ordeal the two men were taken to hospital where one needed dialysis for kidney failure, and the other is still in intensive care. A sister of one of the men told a local radio station that the two men were only freed on Saturday after their families agreed to pay the ransom. She added that, if the money had not been paid, then the two teenagers would be dead. The ants used, known as plant-inhabiting ants, live inside trees, helping them grow by clearing other plants away that might compete with them for food or light. They are not generally aggressive and will only sting when attacked, usually when somebody accidentally steps on their nest or into their territory. The ants use mandibles to lock on to their prey, before injecting venom which can be fatal in large doses. They will use their strong front mandibles to bite the target, locking them in, before using their tail barb to sing repeatedly. Their venom is an anti-inflammatory, and in small doses can be used as a traditional cure for arthritis, but in large doses can be extremely poisonous, causing kidney and liver failure.

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Two teenagers accused of stealing three motorbikes in Bolivia. Angry villagers kept them captive for three days demanding ransom. Tied them to a tree covered in fire ants to force families to pay up.