PHOENIX -- A Phoenix police officer was wounded during a traffic stop in central Phoenix Satudray night, while the shooter fled, stormed an apartment and held a man hostage, investigators said.

The officer, Jennifer Moore, was a passenger in a patrol car when she and her partner, Officer Benjamin Ippel, made the traffic stop at 2100 E. Taylor St., police said.

Investigators said two people inside the vehicle were asked to get out. The passenger, Aaron Baca Lopez, opened fire.

The bullet struck Moore in the finger before lodging in her protective chest vest, Phoenix Police spokesman Sgt. Andy Hill said.

Ippel returned fire and pursued Lopez as he fled on foot, Hill said.

The driver of the suspect vehicle was taken into custody.

Moore was taken to the hospital by fellow officers where she was treated for non-life-threatening injuries. Police said the vest probably saved her life.

Around midnight, police said Lopez forced his way into an apartment in the 2100 block of E. Fillmore and took a man hostage.

"He just came in knocking at the door," said Cesar Patricio. "He pushed my dad and put a gun to his head."

Patricio said the intruder was a complete surprise.

"The guy just said, 'I just shot a police lady, and I just run away from it, and I'm just here to hide,'" Patricio said.

The victim was able to escape and called police.

"When the guy was finally asleep, my dad just ran out the door," Patricio said. "He saw the police on the street and started talking to the police."

After hours of negotiations, Lopez surrendered without incident about 4:40 a.m., Hill said.

Lopez was booked in the county jail for aggravated assault on a police officer and aggravated assault and kidnapping.

Moore is a patrol officer from Central City precinct. She has been an officer for just under a year.