The bodies were found Oct. 23 in the English town of Grays, east of London. Police say the victims were aged between 15 and 44.

Two of the dead were only 15, while the oldest was 44.

The 31 men and eight women are believed to have paid people traffickers for their clandestine transit into England. Police have not provided details about the scheme.

British police say three suspects who were arrested in the deaths of 39 people hidden in a shipping container have been released on bail.

U.K. police found the bodies of 38 adults and one teenager early on Wednesday in a truck container on an industrial estate in England.