The fake suicide belts were made up of leather belts, with water bottles covered in tape attached.
LONDON (AP) - The London Bridge attackers wore fake suicide belts to create "maximum fear" as they carried out their rampage, police said Sunday.
The 34-year-old said: "They were behind me so I couldn't see, one was standing basically beside me as I was huddled down in the corner".
After his payment was declined, Butt and his two accomplices rented a smaller van that they used to plow into crowds before they leapt from the vehicle and went on a stabbing rampage in an attack that left eight people dead and almost 50 injured. The intended truck was smaller but similar to the one used in the Nice attack past year that killed 86 people and injured hundreds in the resort town in the south of France.
Inspector Jim Cole, one of the first officers on the scene as the attack began, described how he hid 200 revellers in a pub cellar amid fears suicide bombers were on the loose outside.
Police stand by a barrier in Borough Market, London.
Detectives suspect the carnage inflicted could have been even worse if the ringleader of the terror gang had not failed to secure the vehicle because his payment did not go through.
Police are holding six other men in the assault on the London Bridge area that claimed eight lives. At 1838 GMT they left and two hours later the van reached London Bridge which they drove along twice before targeting pedestrians on the sidewalk on their third run.
Detectives have so far spoken to 262 people from 19 different countries and, of these, 78 are considered significant witnesses although officers are appealing for more to come forward.
Twelve others who were arrested in the early stages of the investigation have been released without charge.
A man arrested on suspicion of drugs and firearms offences in connection with the investigation was bailed until a date in late June. Police believe the attackers told relatives they were using it to move.