Forensic science officers have joined Bang Luang district police in Nakhon Pathom in the investigation into the mysterious disappearance of an eight-month-old infant from the parents’ home on Sunday.

The parents were questioned again by Bang Luang police yesterday (Thursday) as to whether the boy was sold or given to other people, because they are suspicious that the parents might be responsible for the disappearance of their own child after searches have failed to find any trace of him.

An informed police source said that the police have the mobile phone of the mother and have discovered that her recent Line chat messages have been erased. They also looked into the couple’s bank accounts, but did not find any suspicious transactions, the source added.

Examination of CCTV footage along the main road, near the couple’s house in Bang Luang market in Bang Len district, found a man in a yellow shirt, riding in the back of a pickup truck, leaving the couple’s village on the morning that the baby was reported missing to the police.

Pol Maj-Gen Chakkrit Kruasunthornvanich, the Nakhon Pathom provincial police commander, said yesterday that police still cannot identify the man in the yellow shirt. Chakkrit visited the Bang Luang police station yesterday to follow up on progress in the case.

The commander told the media that the case is rather difficult because, so far, there has been only one witness, who claims to have seen the man in yellow shirt leaving the couple’s house.