Images from various locations where police say a gunman shot and killed several people in Montgomery County, Pa. Monday morning.
For the latest updates on the story:
A police officer runs a line near a home, Monday, Dec. 15, 2014, in Pennsburg, Pa. (AP Photo/Matt Rourke)
Police gather near a home, Monday, Dec. 15, 2014, in Pennsburg, Pa., where suspect Bradley William Stone was believed to have barricaded himself. (AP Photo/Matt Rourke)
Police gather near a home, Monday, Dec. 15, 2014, in Pennsburg, Pa., where suspect Bradley William Stone was believed to have barricaded himself. (AP Photo/Matt Rourke)
Police gather near a home, Monday, Dec. 15, 2014, in Pennsburg, Pa., where suspect Bradley William Stone was believed to have barricaded himself. (AP Photo/Matt Rourke)
A police officer moves near a home Monday, Dec. 15, 2014, in Souderton, Pa., where earlier police believed the suspect barricaded himself inside after shootings at multiple homes. (AP Photo/Matt Rourke)
A police officer moves near a home Monday, Dec. 15, 2014, in Souderton, Pa., where earlier police believed the suspect barricaded himself inside after shootings at multiple homes. (AP Photo/Matt Rourke)
A police officer moves near a home Monday, Dec. 15, 2014, in Souderton, Pa., where earlier police believed the suspect barricaded himself inside after shootings at multiple homes. (AP Photo/Matt Rourke)