Timeline of the Montgomery County killing spree

Authorities have laid out the following timeline of the killing spree in Montgomery County that left six people dead. Investigators say it appears to have taken the suspected shooter, Bradley Stone, an hour and a half to drive from one house to another to take down his wife and her family.

A timeline of events:

3:30 a.m. - Investigators believe Stone got into the Souderton home of his ex-sister-in-law, Patricia Flick, at Penn and Garfield Avenues. He allegedly gunned down the woman, her husband and their 14-year-old daughter. A 17-year-old boy was also shot in the head, but survived.

4:30 a.m. - Police say Stone then went to a home on the 100 block of West 5th Street in Lansdale, Pennsylvania, where he allegedly shot and killed his 57-year-old mother-in-law, Joanne Hill and her 75-year-old mother.

4:55 a.m. - Police in Lower Salford Township receive a 911 call from a resident from the Pheasant Run Apartments on Main Street. Police arrived to find Stone's ex-wife, 33-year-old, Nicole Hill in an upstairs bedroom dead with a gunshot wound to her head. The suspect had apparently taken their two girls and fled the scene.

5:00 a.m. - Authorities say Stone delivers his two daughters to a neighbor in Pennsburg. That was the last time he was seen by anyone.

8:00 a.m. - Police learn of the shooting in Souderton.