A Landover man who was shot and wounded by an off-duty Greenbelt policeman in a crowded department store Saturday night after a woman was stabbed while shopping there was in serious condition at Prince George's General Hospital last night, authorities said.

Greenbelt police said Shawn Brown, 23, of 9108 Hobart St. in Landover, has been charged in a warrant with assault with intent to kill.

Hospital officials said Doris A. Robinson, 24, of 100 Herrington Dr., Upper Marlboro, was in serious but stable condition after surgery late Saturday for stab wounds in the back. Police said Robinson was stabbed more than 30 times.

Robinson was taken to the hospital by Maryland State Police helicopter after the incident about 8:30 p.m. Saturday at Marshall's department store at Beltway Plaza on Greenbelt Road, police said.

They said the incident began when a man, whom police described as the woman's former boyfriend, approached her from behind, chased her through the aisles and stabbed her repeatedly in the back with a four-inch pocket knife.

Nearly 200 customers were in the store at the time of the attack, said Sgt. James Craze. Some customers threw pots and pans at the man, beat on him and tried to pull him away from the woman, but he pushed them away and continued attacking the screaming woman, Craze said.

As the stabbing was taking place at the rear of the store near the housewares section, Craze said, customers and store employes shouted for help, alerting a security guard in the front of the store.

Police said Craig Rich, 28, an off-duty Greenbelt police officer wearing his police uniform and carrying his service revolver, was working part time as a security guard at the store.

When Rich reached the scene the woman was lying on the floor while the man continued to stab her, police said.

They said Rich "called several times" for the man to stop, and when the man did not, Rich fired one shot from his service revolver at close range, wounding the man in the back.

Craze said that after the incident customers poured out of Marshall's "like floodgates opening." Crowds of shoppers from the mall ringed the store as police cars, ambulances, fire equipment and the rescue helicopter assembled at the scene, according to one witness.

Rich, a three-year veteran of the force, was placed on administrative leave with pay pending completion of an investigation into the incident, police said.