BERLIN (AP) _ An East German court Monday convicted a former Nazi guard of murdering 28 Jewish prisoners at a labor camp in Poland during World War II and sentenced him to life in prison, the state-run news agency ADN said.

Jakob Holz, 79, was found guilty of war crimes and crimes against humanity for his part in killing the workers at the forced labor camp in Radom, Poland, ADN said.

The agency said Holz personally shot 18 of the 28 people.

''Witnesses at the trial recognized their one-time tormenter and testified against him without hesitation,'' and other testimony submitted in writing to the court also proved his guilt, ADN said.

''Despite the testimony that he often took part in torture and executions, Holz claimed he could not remember taking part in the crimes he was accused of,'' ADN said.

The report said Holz had worked as a deputy chief of guards at the Steyr- Daimler-Puch-AG weapons factory in Radom. It did not say exactly when the killings occurred.

Holz was tried in Rostock, on the Baltic coast.