BANGKOK, July 8 -- Deputy police chief Ake Angsananond said police had plentiful evidence to prosecute the SRT worker suspected of raping and killing a girl on a southern train.
The suspect said he took speed pills before doing his cleaning work on the train.
Pol Gen Aek said in Pran Buri district of Prachuap Khiri Khan province that the crime against the 13-year-old girl by train cleaner Wanchai Saengkhao was appalling, and drew public attention. The authorities had substantial forensic evidence, he said, as well as the suspect's confession.
He said police had yet to discover if there were more culprits in the case.
Mr Wanchai said he had taken three speed pills and been under their influence before boarding the train for work.
As the train passed the station in the Prachuap Khiri Khan provincial seat, he forced the girl to an unconscious state by pressing her throat.
He raped her when the train reached the Nong Khang station in Pran Buri district and threw her body out of the train window while the train was passing the Wang Pong station in Pran Buri.
The southern train reached Bangkok at 6am on July 6.
Mr Wanchai said that he sold a 5s iPhone belonging to the victim for Bt1,800 in Bangkok's Dusit district.
Prapat Chongsanguan, governor of the State Railway of Thailand, said police would be deployed on all trains to ensure public safety.
He gave assurances that the SRT would take responsibility for the tragedy.
Thailand's social media discussions are calling for the death penalty against rapists.