( CNN ) -- Police in Pennsylvania mounted an intense search Monday in the Philadelphia suburbs for a man suspected of killing his ex-wife and five former in-laws , the district attorney for Montgomery County , Pennsylvania , said at a Monday night press conference . Bradley William Stone of Pennsburg killed his ex-wife and her mother , grandmother and sister , as well as the sister 's husband and 14-year-old daughter , said District Attorney Risa Vetri Ferman . But Stone did n't harm his two daughters , who were living with his ex-wife . He took them to a neighbor 's residence in Pennsburg , the last place he was seen , Ferman said . `` We do not know where he is , '' Ferman said . `` We do not have vehicle information . We actually recovered his vehicle and his personal cellphone so we do not have information how he might be traveling . '' She did n't provide a motive for the slayings . Stone was described as armed and dangerous . Late Monday night , police agencies descended on Doylestown , Pennsylvania , to investigate a possible sighting of Stone , according to a source with knowledge of the investigation . Doylestown is about 25 miles from Pennsburg . A `` shelter in place '' had been ordered in the surrounding area where the sighting occurred , according to the source , and K-9 units have been asked to respond to the area as well . Suspect led American Legion post . The killings broke the calm in several small towns in Montgomery County , the second wealthiest county in Pennsylvania and the 51st wealthiest in the United States , according to the county government web page . Stone served as a reservist in the U.S. Marines until 2011 , mainly as a meteorologist , according to the Marines . He spent a few months in Iraq in 2008 . William Schafte of Harleysville , who described himself as a friend , said Stone was a `` good guy '' who helped people who needed money or a hand , according to the Morning Call newspaper of Allentown , Pennsylvania . Stone served as president of the American Legion William E. Hare Post 206 in Lansdale about a decade ago , said the current post commander John Gillmer , the Morning Call reported . `` He was always on the honor guard and stuff like that for parades , '' Gillmer told the Morning Call . `` I was shocked , I could n't believe it . ... I never would have thought it was one of our guys . '' 911 hangup call started investigation . Ferman said the investigation started at 4:25 a.m. with a 911 hangup call directing police to the town of Lansdale , 28 miles northwest of Philadelphia . When police arrived , they found two slain women : Stone 's former mother-in-law and former grandmother-in-law , Ferman said . At 4:55 a.m. a neighbor of Stone 's ex-wife called 911 , Ferman said . Police went to an apartment in Lower Salford and found Nicole Stone , 33 , dead . Another neighbor , Michele Brewster said she heard a loud crash and shattering glass . `` Thought I heard a gunshot , but was n't sure , '' she said . `` A few minutes later I saw flashlights -- it was the cops putting up police tape so I went outside . '' Brewster said she asked an officer if gunshots had been fired . He said yes . `` I asked him if she was dead , '' Brewster said , `` but he said he could n't tell me that . '' At 5:30 a.m. Stone delivered his two daughters to a neighbor in Pennsburg , Ferman said . `` That was the last time he was seen by anyone , '' she said . `` I think it 's of great significance the children are safe right now . '' About 8 a.m. , police went to the home of Nicole Stone 's sister , Patricia Flick , in Souderton . Officers found Flick , her husband and the couple 's 14-year-old daughter dead , Ferman said . The sister 's 17-year-old son was wounded and was being treated at a Philadelphia hospital , Ferman said . Suspect may be wearing fatigues . Though last discovered , it appears the killings in Souderton took place first , the district attorney said . Ferman 's office said Stone may be wearing military fatigues , in either sand or green color . According to Montgomery County court documents found online , the Stones divorced in 2009 . In family court papers , Stone 's ex-wife said he claimed in a 2011 hearing that he was `` permanently disabled , '' according to the Veterans Administration , but that he had not applied for Social Security disability benefits . The Marine Corps told CNN it has no record of Stone being injured . `` Earlier today we indicated that he does on occasion use a cane or a walker , but he may or may not be using those devices , '' Ferman said at the press conference . `` It 's been indicated to us it may not have been necessary . ... If he has escaped he might be seen using a device or not . '' CNN affiliate WPVI said police originally thought Stone was holed up inside the house in Lansdale , so officers surrounded the residence . Heavily armed SWAT teams tossed flash-bang devices into the house and stormed the residence , but police said Stone was not inside . Fast Facts : Rampage killings in the United States . CNN 's Kristina Sgueglia and Lawrence Crook contributed to this article .
NEW : Police descend on Pa. , Pennsylvania , after possible sighting of suspect . Killings break the calm in five small towns in Pennsylvania . CNN says suspect killed his ex-wife and five in-laws . Suspect identified as Bradley William Stone , 35 , of Pennsylvania , Pennsylvania .