The son of an ex-dissident who was killed in jail during Romania's communist era has ended a hunger strike after 17 days.

Andrei Ursu says he called it off Thursday afternoon after prosecutors told him they would reopen an investigation into the death of Gheorghe Ursu, who was killed in prison in 1985 on the orders of the former Securitate secret police.

Communism ended in 1989, but Romania has been slow to prosecute those who allegedly committed abuses under ex-leader Nicolae Ceausescu because many officials retained their jobs, critics say.

Ursu, a Romanian-born U.S. citizen, said Friday he would stage another hunger strike if the case wasn't solved. He says "my protest is for all those who suffered tortured abuse, were illegally followed or lost their jobs."