Wilkinsburg, Pennsylvania, March 9, 2016. 6 people killed, 2 people injured.

Philadelphia, Pennsylvania, December 26, 2015. 0 people killed, 4 people injured.

Mount Oliver, Pennsylvania, December 11, 2015. 0 people killed, 4 people injured.

Pittsburgh, Pennsylvania, November 20, 2015. 1 person killed, 3 people injured.

Philadelphia, Pennsylvania, November 15, 2015. 0 people killed, 4 people injured.

Johnstown, Pennsylvania, November 14, 2015. 0 people killed, 4 people injured.

Philadelphia, Pennsylvania, September 20, 2015. 1 person killed, 3 people injured.

Pittsburgh, Pennsylvania, August 15, 2015. 1 person killed, 3 people injured.

Pittsburgh, Pennsylvania, July 30, 2015. 0 people killed, 4 people injured.

Erie, Pennsylvania, July 24, 2015. 2 people killed, 3 people injured.

Philadelphia, Pennsylvania, July 3, 2015. 2 people killed, 2 people injured.

Philadelphia, Pennsylvania, June 22, 2015. 0 people killed, 7 people injured.

Philadelphia, Pennsylvania, June 20, 2015. 0 people killed, 10 people injured.

Chester, Pennsylvania, May 28, 2015. 1 person killed, 3 people injured.

Williamsport, Pennsylvania, April 18, 2015. 0 people killed, 5 people injured.

Pittsburgh, Pennsylvania, April 5, 2015. 1 person killed, 3 people injured.

Lansdale, Pennsylvania, December 15, 2014. 6 people killed, 0 people injured.

Montgomery County, Pennsylvania, December 15, 2014. 6 people killed, 3 people injured.

Reading, Pennsylvania, November 26, 2014. 0 people killed, 4 people injured.

Clairton, Pennsylvania, November 21, 2014. 0 people killed, 6 people injured.

Philadelphia, Pennsylvania, September 28, 2014. 0 people killed, 4 people injured.

Philadelphia, Pennsylvania, September 21, 2014. 2 people killed, 2 people injured.

Philadelphia, Pennsylvania, August 9, 2014. 0 people killed, 4 people injured.

St. Pauls, Pennsylvania, August 7, 2014. 0 people killed, 4 people injured.

Pittsburgh, Pennsylvania, August 2, 2014. 1 person killed, 5 people injured.

Philadelphia, Pennsylvania, August 1, 2014. 1 person killed, 3 people injured.

Philadelphia, Pennsylvania, July 28, 2014. 1 person killed, 4 people injured.

Pittsburgh, Pennsylvania, July 23, 2014. 0 people killed, 4 people injured.

Chester Township, Pennsylvania, July 2, 2014. 0 people killed, 5 people injured.

Pittsburgh, Pennsylvania, March 1, 2014. 1 person killed, 4 people injured.

Erie, Pennsylvania, January 5, 2014. 1 person killed, 3 people injured.

Philadelphia, Pennsylvania, November 21, 2013. 0 people killed, 4 people injured.

Pittsburgh, Pennsylvania, October 20, 2013. 2 people killed, 5 people injured.

Harrisburg, Pennsylvania, October 13, 2013. 0 people killed, 8 people injured.

Philadelphia, Pennsylvania, October 6, 2013. 1 person killed, 5 people injured.

Ashville, Pennsylvania, September 27, 2013. 4 people killed, 0 people injured.

Shaler Township, Pennsylvania, August 22, 2013. 2 people killed, 2 people injured.

Philadelphia, Pennsylvania, August 16, 2013. 0 people killed, 4 people injured.

Philadelphia, Pennsylvania, August 13, 2013. 0 people killed, 4 people injured.

Saylorsburg, Pennsylvania, August 6, 2013. 3 people killed, 3 people injured.

Ross Township, Pennsylvania, August 5, 2013. 3 people killed, 4 people injured.

York City, Pennsylvania, June 9, 2013. 0 people killed, 4 people injured.

Philladelphia, Pennsylvania, May 16, 2013. 0 people killed, 4 people injured.

East Germantown, Pennsylvania, May 11, 2013. 0 people killed, 4 people injured.

Johnstown, Pennsylvania, May 6, 2013. 0 people killed, 4 people injured.

Chester, Pennsylvania, April 28, 2013. 1 person killed, 3 people injured.

Philadelphia, Pennsylvania, April 9, 2013. 1 person killed, 3 people injured.

McKeesport, Pennsylvania, January 1, 2013. 0 people killed, 4 people injured.