( CNN ) -- A Pennsylvania district attorney says there may never be closure in the case of a man suspected of killing his ex-wife and five former in-laws . `` There 's no excuse ; there 's no valid explanation . There 's no justification for snuffing out these six innocent lives and then injuring another child . This is just a horrific tragedy , '' Montgomery County District Attorney Risa Vetri Ferman told reporters Tuesday . The body of the suspect , Bradley William Stone , was found with what looked to be self-inflicted wounds . The former Marine reservist had been on the run since Monday 's slayings shook small communities north of Philadelphia . Although a final report from the coroner is pending , Stone appears to have died from self-inflicted cutting wounds , in the center of his body , according to Ferman . His body was found in a wooded area about 1/2 mile from his home in Pennsburg . It was not immediately clear how long the remains had been there . `` When you look at the three different locations , the number of people killed , clearly we are looking at a premeditated killing -- a planned killing , an intentional , deliberate killing , '' said Ferman . The slayings . 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 . Early Monday morning , a hangup call to 911 first tipped off police to the bloodshed , directing them to 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 . A short time later , a neighbor of Stone 's ex-wife called 911 , the prosecutor explained . Police went to an apartment in Lower Salford and found 33-year-old Nicole Stone dead . `` I heard three or four gunshots and I heard the kids yelling , saying , 'Mommy , no . No , mommy , no . ' And he just said , 'Let 's go . We got ta go , ' '' a neighbor who did not want to be identified told CNN affiliate WFMZ . `` I heard him say , 'Let 's go . We got ta get in the car . ' '' `` They did n't have any coats on or anything , '' the neighbor said . `` They just had their pajamas on , and he just said , 'We got ta go . ' He was like , 'She 's hurt . She 's hurt pretty bad . We have to leave . ' And just got in the car and sped off . '' In addition to Nicole Stone , her mother , grandmother and sister were found dead , as well as the sister 's husband and 14-year-old daughter , Ferman said . The sister 's 17-year-old son was being treated at a Philadelphia hospital . Ferman said that the teen , who sustained cutting injuries to his hands and head , was in serious condition . But Stone did n't harm his two daughters , who were living with his former wife . At about 5:30 a.m. , he brought them to a neighbor 's residence in Pennsburg , according to Ferman . `` That was the last time he was seen by anyone , '' the attorney said . `` I think it 's of great significance the children are safe right now . '' Ferman said Stone and his ex-wife had been involved with ongoing and contentious custody disputes . `` We learned that just last week he had made an effort in court to try to secure custody -- emergency custody of the children -- and that was denied , '' she said . Who is Stone ? According to Montgomery County court documents found online , the Stones divorced in 2009 . Fast Facts : Rampage killings in the United States . 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 , called Stone a `` caring guy '' who loved his country . `` I was totally shocked . I did n't really think that he was capable of doing such a horrific thing like this , '' he told CNN 's `` The Lead with Jake Tapper . '' `` He would ... go the extra mile to help anybody out . This is just , it 's a total shock to me and to his other friends . '' Stone served as president of the American Legion William E. Hare Post 206 in Lansdale about a decade ago , said current post commander John Gillmer , the Morning Call newspaper of Allentown reported . `` He was always on the honor guard and stuff like that for parades , '' Gillmer told the Morning Call . `` I could n't believe it . ... I never would have thought it was one of our guys . '' The Upper Perkiomen School District called off classes Tuesday . Following the announcement of Stone 's death , it said schools would reopen at regular times Wednesday . CNN 's Shimon Prokupecz , Susan Candiotti , Ed Payne , Ralph Ellis , Kristina Sgueglia and Lawrence Crook contributed to this report .
Schools will reopen in nearby Perkiomen at regular intervals . An injured teen remains in serious condition , with gunshot wounds . Bradley Lee Stone appears to suffer from self - inflicted wounds . He is suspected of murdering his ex - wife and five relatives .