“I will try to gather evidence, including photos, to prove that my younger sister is not involved,” the elder sister of Jidarat Promkhun said yesterday.

Speaking on condition of anonymity, she said it was not fair that Jidarat faced charges similar to those levelled against the four other suspects.

“She was not even with them at the time of the killing,” the sister said.

Jidarat faces several charges, including murder, for the killing and dismemberment of Warisara Klinjui in Khon Kaen province last month. According to her sister, Jidarat was in Bangkok at the time of the killing.

Police so far have not pressed the more serious charge of premeditated murder against Jidarat, which the other four suspects face.

The Justice Ministry earlier this week received a petition for justice filed by Jidarat’s sister. Asked about the case, the ministry’s deputy permanent secretary Dusadee Arawuit said yesterday that the ministry would have to verify the facts before extending help.

“At the very least, the suspect will have to pass a lie detector,” he said.

The murder and dismemberment of Warisara has made headlines during the past few weeks with the families of the victim as well as of the murder suspects receiving considerable media coverage.

The lawyer for Warisara’s family, Noppadon Sidatan, yesterday announced the family’s decision to sue Prapasri Somsri, an elder sister of the prime murder suspect Priyanuch Nonwangchai, for defamation.

“We will seek Bt10million compensation for her slanderous comments about Warisara,” Nopppadon said.