Philadelphia police have identified Francis Whalen, a 17-year veteran of the department, as the SWAT office shot in the abdomen while serving a search warrant Wednesday morning.

Police say Whelan was part of a team assigned to arrest Devon Guisherd at an apartment complex in the 800 block of Riverside Drive. Guisherd was wanted in the 2014 for murdering a pregnant woman and her unborn child. 

Guisherd fled into a bedroom and fired at police, hitting Whelan, who returned fire. Guisherd suffered a gunshot wound to the chest and was pronounced dead at the hospital. 

The slug Guisherd fired was stopped by Whelan's bullet-proof vest. He was treated and released from the hospital. 

For Whelan, it was the second time he was shot while serving as a SWAT officer. 

In December 2010, Whelan and Sgt. Christopher Binns were shot during a SWAT raid while trying to arrest Nasuil Martinez, who was wanted for shooting for another police officer. In that case, Kevlar body armor prevented the bullet from piercing the body. 

Martinez later shot himself accidentally during a standoff with police. 

Whalen is a father of two. 

Guisherd was wanted for the murder of Megan Doto, who was full-term pregnant when she was killed by a stray bullet while sitting on her porch. 

Doto's baby was delivered by Caesarian section. The baby later died. 

Doto left behind two other children.