Thai girl weighed only 40kg when she was allegedly murdered by WA man Simon Peter Carman

Thai police say the 17-year-old girl allegedly murdered by Western Australian Simon Peter Carman was found dead in a suitcase last week.

Tunchanok Donhomla’s body was found in a suitcase near railway tracks on June 26, more than 4 km from Mr Carman’s Jomtien apartment complex in Pataya, Thailand.

Police chief Colonel Anek Srathongyoo said the teenager, known to his friends as Nong Cake, was reported to be only 40kg and 150cm tall.

Thai authorities also said that the accused killer weighed more than 100 kg and was 180 cm tall.

Mr Carman was arrested on Friday night, minutes before boarding a Jetstar flight to Perth. The teenager’s body was found a few hours after his arrest.

Colonel Sthongyoo explained that his name was added to the watch list just 10 minutes before he went through security, and that if he had managed to get through, Thai police would not have had any warrant to arrest him.

Mr Carman, from Perth, is currently being held in Pattaya Remand Prison.

The teenager was last seen live on CCTV at around 3.30am on Thursday entering the complex hand in hand with Mr Carman.

He is accused of leaving the back of the complex at around 21.25 that night, dragging the suitcase containing the woman’s body. The suspect is accused of tying the suitcase to the back of a motorcycle and leaving it near railroad tracks before returning to his complex about 35 minutes later.

Mr. Carman faces the possibility of life imprisonment or the death penalty if convicted of four counts of murder, transporting or destroying a corpse, concealing a corpse and abducting a child for improper purposes.