( CNN ) -- Three Pittsburgh , Pennsylvania , police officers were shot to death while responding to a 911 call of a domestic argument triggered by a urinating dog , according to a criminal complaint filed in the case . Law enforcement from several jurisdictions respond to a shooting standoff at Pittsburgh home Saturday . The officers were the first department fatalities since 1995 , according to the department . Police said following the shootings Saturday that Richard Poplawski , 22 , would be charged with three counts of homicide , aggravated assault and other charges . Poplawski , who was shot in the leg during a four-hour standoff with police , was hospitalized at an undisclosed location , police said . Details of the incident were included in the police complaint seeking an arrest warrant for Poplawski . The complaint says Margaret Poplawski called 911 about 7 a.m. Saturday to report that her son was `` giving her a hard time . '' Watch officers respond at the scene » . She told police she awoke to discover that `` the dog had urinated on the floor , '' and awakened her son `` to confront him about it . '' The two had an argument , and Margaret Poplawski told her son she was calling police to remove him from her home , according to the complaint . When officers Stephen Mayhle and Paul Sciullo III arrived , she opened the door and let them in . `` Mrs. Poplawski reported that as the officers entered approximately 10 feet into the residence , she heard gunshots , turned and saw her son about six feet away with a long rifle in his hands , at which point she fled downstairs after asking him , 'What the hell have you done ? ' '' the complaint said . Margaret Poplawski reported she stayed in the basement during the standoff , and heard her son yell , `` Yeah , I 've been shot , '' and `` I 'm standing down , come in and help me , '' according to the complaint . Police Chief Nathan Harper identified the dead officers as Eric Kelly , Mayhle and Sciullo . Kelly was a 14-year veteran of the department ; the other two had worked there for two years each . Watch prayers for fallen officers » . The chief said Sciullo was the first to approach the home , and was shot in the head as he entered the doorway . When Mayhle tried to help his fellow officer , he also was shot in the head . Kelly arrived at the scene and was shot before he could aid the other two officers , Harper said . Harper said the suspect fired from a bedroom window , shooting at an armored vehicle carrying a SWAT team -- preventing those officers and medics from reaching the wounded policemen . Two other officers , Timothy McManaway and Brian Jones , were injured . McManaway was shot in the hand and Jones , who was trying to secure the rear of the house , broke his leg trying to get over a fence , Harper said . Rescue units from other jurisdictions also were met with gunfire , the chief said . McManaway told police he responded to the scene after a report that officers were being fired upon , according to the complaint . As he arrived , he saw that Kelly was `` lying supine '' by his personal SUV , as Kelly had just completed his shift and apparently was on his way home when he responded to help the other officers . Kelly raised his arm for help , and McManaway said he ran to Kelly , who was wounded and said he could not breathe . As he was trying to help Kelly , shots rang out from the home , injuring his hand , he said , according to the complaint . McManaway returned fire , and told authorities he pulled Kelly behind the SUV , where the two remained until SWAT officers arrived . Kelly was taken to a local hospital , where he died of his injuries . Margaret Poplawski told police her son had enlisted in the Marine Corps a few years ago , but was discharged for assaulting his drill sergeant in basic training , according to the complaint . Since his discharge , she told police , he had been `` stockpiling guns and ammunition , buying and selling the weapons online , because he believed that as a result of the economic collapse , the police were no longer able to protect society . Mrs. Poplawski reported that her son only liked police when they were not curtailing his constitutional rights , which he was determined to protect , '' the complaint said . Autopsies showed that Kelly died of gunshot wounds to the trunk and lower extremities , Sciullo died from gunshot wounds to the head and trunk , and Mayhle was shot in the head , the complaint said . `` We have never had to lose three officers in the line of duty on one call , '' Harper , the police chief , said . `` They have paid the ultimate sacrifice . '' Authorities believe Poplawski , wearing a bullet-proof vest , aimed more than 100 rounds at police , using an AK-47 , Harper said Saturday . Harper said some neighbors were evacuated during the standoff . Police had responded to calls from the home two or three times previously , Harper said .
The officers were the first department fatalities since a few years ago . first officer killed was on his way home after finishing shift . Officers were responding to domestic call in Pittsburgh area of Stanton Heights . one more officers were injured in the nearly four-hour standoff that ensued .