A Meriden police officer has resigned after being convicted of using unreasonable force against a prisoner in the police lockup. City personnel director Caroline Beitman told the Record-Journal that Evan Cossette called her Tuesday morning and told her he was resigning. Cossette is the son of Meriden police Chief Jeffry Cossette. He was convicted Monday of violating the civil rights of Meriden resident Pedro Temich and lying in a police report. He faces up to 30 years in prison when he is sentenced in August. Authorities said Temich fell and fractured his skull after Cossette pushed him in a jail cell in 2010.