Harrison said the shooting was not connected to the two churches near the location. One local said a group of people were having a cookout nearby when the shooting took place.
The victim said he was near Grantley Avenue and Garrison Avenue in Northwest Baltimore when he heard four or five gunshots and realized he was shot.
The station reported that the shooting occurred on Edmondson Avenue, west of downtown Baltimore.
The shooting comes roughly six weeks after Harrison's swearing-in last month as Baltimore police commissioner, when he promised to make the city safer and lead the department through sweeping reforms required by a federal consent decree.
Police activity and evidence markers were set up around 5 p.m.at Buster's Place Barber Shop on the opposite side of the block where the church is located.
"It wasn't anything dealing with the church". It was unclear whether the cookouts were related, Harrison said.
"At this time, suspect information and motive is unknown to investigators", Harrison said in a release.
"We know that many people were out here", Harrison said.
Acting Mayor Bernard C. "Jack" Young called on the public for information, CNN reported. "People know who's doing these shootings".
Two teenagers were shot in the 3800 block of Ravenwood Ave.in Northeast Baltimore late Saturday night, city police said.
The victim was taken to an area hospital where he is listed in critical but stable condition, police said.
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