SINGAPORE (AP) — The parents of an American software engineer who believe their son was murdered last year in Singapore withdrew from the inquest Wednesday, saying they have no confidence in the city-state’s legal process.

Shane Truman Todd’s body was found in his Singapore apartment by his girlfriend last June 24, and police have said he killed himself. State counsel presented evidence of links to suicide websites on the 31-year-old’s laptop and suicide letters written to his family members and loved ones.