WARSAW, Poland (AP) _ A Solidarity activist was sentenced to one year in prison for striking a policeman after being arrested for possessing underground leaflets, an opposition spokesman said Thursday.

Krzysztof Wolf, 29, a dismissed employee of the Warsaw Steelworks, was sentenced Wednesday night in the southern city of Czestochowa, where he was arrested Sept. 18, the Solidarity spokesman said.

Zbigniew Romaszewski, the head of a Solidarity human rights monitoring committee, said much of the trial testimony involved allegations that Wolf was beaten severely by police after his arrest. The court made no ruling on those allegations, he said.

About 50 friends and union sympathizers attended the trial, Romaszewski said.

The sentencing came one day after another Solidarity activist, Boguslaw Szybalski, was sentenced to a 1 1/2 -year prison term on a charge of trying to bribe a police officer who caught him transporting illegal copying equipment.