Carers accompanying a disabled man on a trip to a Cambridgeshire zoo were 'on their phones' and 'ten metres behind him' before he allegedly hurled a three-year-old boy into a crocodile pit.The boy sustained critical injuries at Johnsons of Old Hurst, near Huntingdon, Cambridgeshire, following the incident Thursday lunchtime.The youngster is thought to have been tossed over the four-foot fence separating an aerial walkway from the enclosure below, where he landed on concrete before rolling into water.He was attacked by at least one of the animals before hero zookeeper Tracey Johnson jumped into the pit and snatched him from further danger.A man with learning disabilities was arrested at the scene on suspicion of attempted murder, but has since been bailed until September after being assessed as unfit for interview. Now witnesses have told how earlier they saw the man's carers 'on their phones' and not paying close attention during his trip to the zoo with other vulnerable adults.A mother at the zoo at the time of the incident described hearing a 'loud scream' while sitting on a bench outside the enclosure.She told the Sun: 'Someone later described the man that did it and said he was with carers. The boy had been on an elevated walkway admiring at least 15 crocodiles and alligators when he was apparently lifted over a 4ft safety fence and hurled 15ft into the enclosure (pictured in 2025) Tracey Johnson, right, the hero zoo owner who pulled the child to safety, chats with her husband Andy today as it was revealed the suspect has already been released from custody The boy had been looking at the reptiles when he was thrown around 15ft from this elevated viewing platform into the Johnsons of Old Hurst tropical house near Huntingdon'I don't know if it was definitely him but I saw one bloke of a bigger build, he had two carers with him and they weren't paying him much attention.'If it was him, his carers were maybe ten metres behind him. They were English and chatting among themselves and on their phones.'On Friday, Cambridgeshire police confirmed the boy is still in a critical condition in hospital, with his injuries said to include a broken arm and pelvis.A spokesperson said: 'A three-year-old boy from Cambridgeshire remains in Addenbrooke's Hospital in a critical but stable condition.'A 30-year-old man from Norfolk, arrested on suspicion of attempted murder, has been released on bail while detectives from the Major Crimes Unit conduct further enquiries regarding this incident. 'The man, not known to the victim, was assessed as not being fit for interview.'It is believed that the man was on a trip with other vulnerable adults and had at least two carers with him. Yesterday 55-year-old Mrs Johnson – whom one friend described yesterday as a 'special, steadfast, old-fashioned heroine' – was lauded as a hero after she climbed into the pen, waded to the boy and 'swooped down to pull him to safety'.She is then thought to have escaped through a keepers' exit.Chris Newman, director of the National Centre for Reptile Welfare, said: 'Her actions are nothing less than what I would expect of her. She is an incredible lady. It was a very brave thing to do.'