Media playback is unsupported on your device Media caption "There was no danger" says London Zoo's Malcolm Fitzpatrick 
  
 A male gorilla has been recaptured after escaping from its enclosure at London Zoo. 
  
 The zoo said Kumbuka, a western lowland silverback, had escaped into the secure keepers' area. 
  
 It added that the gorilla, which arrived from Paignton Zoo in Devon in early 2013, had not escaped into a public area. 
  
 A spokesman for the zoo said that at no time were any of its visitors in danger. 
  
 Police said the incident had now "concluded" after the gorilla was shot with a tranquilliser dart. 
  
 Image copyright Oli Scarff/Getty Images Image caption The zoo said Kumbuka, a western lowland silverback, arrived from Paignton Zoo in Devon in early 2013 
  
 Visitor Brad Evans said customers had been locked inside the cafe at about 17:10 BST and told by staff a gorilla had escaped from its enclosure. 
  
 Met Police officers arrived at the zoo at 17:20 and said the animal had been recaptured shortly before 19:00. 
  
 Mr Evans said he had been visiting the zoo with his daughter and son-in-law and they did not want the gorilla to be shot. 
  
 He added that visitors had since been allowed to leave the zoo. 
  
 Media playback is unsupported on your device Media caption Eyewitnesses describe the moment a gorilla escapes at London zoo 
  
 Eyewitnesses Hannah O'Donoghue-Hobbs and Charlotte Neild likened the gorilla's escape to "like being in Jurassic Park ". 
  
 They told BBC London they had been escorted away from windows near the enclosure by the police. 
  
 They added the gorilla had been seen by other visitors and that it had appeared to be "really angry" and was "banging on the cage". 
  
 'Up and grumbling' 
  
 Malcolm Fitzpatrick, curator of mammals at London Zoo, told the BBC: "At 17:15 our male gorilla got out of his back dens into a secure keeper area. Our staff were able to respond quickly and Kumbuka was tranquilised and returned to his dens. 
  
 "We're happy to report that he's up and grumbling, and interacting with the rest of his family in his gorilla kingdom." 
  
 Image copyright Hannah O'Donogue-Hobbs Image caption Police arrived at London Zoo to assist in the recapture 
  
 Mr Fitzpatrick said the event had been a "minor incident" that was over "within an hour". 
  
 An investigation is ongoing, he said, but "at no time were any of our visitors in danger, the gorilla did not get out of his safe space. There were only about 100 visitors in the zoo". 
  
 Asked why visitors had been told to shelter in zoo buildings, Mr Fitzpatrick reiterated there had been "no danger" to the public, but staff had "thought it was the best process". 
  
 He said the gorilla "is a very popular animal and he's doing very well," adding: "I understand he will be given his favourite treats a bit later on." 
  
 The recapture comes after Harambe, another gorilla, was shot and killed at Cincinnati Zoo in the US after a young boy fell into its enclosure. 
  
 The boy was not seriously hurt and Harambe's death sparked anger on social media. ||||| Police and evacuated visitors stand outside London Zoo after a gorilla escaped in London, Thursday, Oct. 13, 2016. London police say an incident involving a gorilla that escaped from its enclosure at... (Associated Press) 
  
 Police and evacuated visitors stand outside London Zoo after a gorilla escaped in London, Thursday, Oct. 13, 2016. London police say an incident involving a gorilla that escaped from its enclosure at the London Zoon has been concluded. There are reports the animal was subdued Thursday with a tranquilizer... (Associated Press) 
  
 Police and evacuated visitors stand outside London Zoo after a gorilla escaped in London, Thursday, Oct. 13, 2016. London police say an incident involving a gorilla that escaped from its enclosure at the London Zoon has been concluded. There are reports the animal was subdued Thursday with a tranquilizer... (Associated Press) Police and evacuated visitors stand outside London Zoo after a gorilla escaped in London, Thursday, Oct. 13, 2016. London police say an incident involving a gorilla that escaped from its enclosure at... (Associated Press) 
  
 LONDON (AP) — A wildlife advocacy group has warned that the escape of a silverback gorilla from the London Zoo that ended without injuries to visitors or the animal could have ended very differently. 
  
 Chris Draper of the Born Free Foundation said Friday the group is "relieved" no people or animals were hurt but said it was a reminder of the risks of keeping dangerous wild animals in captivity. 
  
 Male gorilla Kumbuka escaped from his enclosure Thursday evening, leading some zoo visitors to be locked inside of buildings until the animal was subdued by a tranquilizer dart. 
  
 Armed police descended on the zoo. Officials said the public was not in danger and the gorilla was back in his enclosure within an hour. 
  
 An investigation into the escape is underway. |||||

Write a summary.
– Kumbuka the gorilla's story has a much happier ending than Harambe's. The silverback gorilla was recaptured within an hour of escaping his enclosure at the London Zoo Thursday night, and a keeper tells the BBC that he is "happy to report that he's up and grumbling, and interacting with the rest of his family in his gorilla kingdom." The western lowland silverback didn't get a chance to swing from Big Ben: Authorities say he was taken down by a tranquilizer dart while still in a secure area reserved for zookeepers. Armed police were sent to the scene—which some visitors locked into zoo buildings after the alarm was raised likened to Jurassic Park—but no shots were fired, and the zoo says the public was never in danger, the AP reports. Kumbuka's keeper says the gorilla is a very popular animal and despite the escape attempt, "he will be given his favorite treats a bit later on."