
He said officers had been taking care of the witness who had been cooperative and provided useful information, so there was no reason for any intimidation.
Insisting that it wasn't a complicated case, he urged all sides to wait for justice to run its course, as anything said to the media could amount to libel.
Winthai also commented on a call via change.org for the authority to release CCTV recordings of the incident. He said revealing such sensitive footage, which was part of the evidence, could affect the ongoing investigation.
Chaiyapoom, a Mathayom 4 student and a role-model teenager according to those who knew him, was killed at an army checkpoint near his village in Chiang Mai's Chiang Dao district on March 17.
Soldiers have claimed 2,800 methamphetamine tablets were found in Chaiyapoom’s car after the shooting.