( CNN ) -- A gunman carrying a variant of an AK-47 rifle opened fire on uniformed Nevada National Guard members having breakfast at a Carson City , Nevada , restaurant , killing two of them and injuring three , officials said Tuesday . A civilian woman in the line of fire also died and five others were injured in the mass shooting at an IHOP restaurant , officials said . The attacker died later of a self-inflicted wound . The FBI said there was no indication of terrorism . Authorities said they had not determined a clear motive . `` To say that he was targeting before he came into the restaurant those military persons , we have not been able to establish , '' said Carson City Sheriff Ken Furlong . `` Clearly , the fact that five of the 11 were military draws a concern by us . '' The suspected gunman was identified as Eduardo Sencion , 32 , who lived in Carson City and worked at a family business in South Lake Tahoe , California , authorities said . `` There was no indication he knew anyone in the restaurant , '' said Michael West , supervisory special agent with the FBI . Witnesses indicated Sencion said something while inside the IHOP , West said . Sencion had no previous criminal record on file but his family indicated he may have had mental health issues , Furlong told reporters . He was at the family business Monday night and spent the night in Carson City , officials said . Family members reported `` no unusual activity . '' The AK-47 was recovered and authorities will determine whether it was an automatic , Furlong said . An empty 30-round gun magazine and two other gun magazines were recovered . A pistol and assault rifle were found in or near a vehicle , the sheriff said . The shooting began shortly before 9 a.m. , according to Furlong . When authorities arrived , those who called in the incident identified the shooting suspect as a man lying wounded in the parking lot between two vehicles . The suspect had continued firing in the parking lot after leaving the restaurant , Furlong said . One individual was wounded outside . Steven Martin , a witness , told CNN Reno affiliate KRNV that he ran to see if he could help after he heard shots being fired . `` There was blood everywhere ; broken glass everywhere . It was just a war zone down there , '' he said . A blue minivan registered to the suspect 's brother was being studied , Furlong said . Chuck Allen with the Nevada Highway Patrol said officials were taking precautions in case military personnel were being targeted . `` When you have people in uniform randomly targeted ... we take that seriously , '' Allen said . The shooting took place just a few miles from the Nevada National Guard state headquarters in Carson City . The two deceased Guard members were men . Two of the wounded Guard members were women . Guard spokeswoman Maj. April Conway said officials will `` ensure we do everything possible to take care of our families and support our Guardsmen . ''
NEW : FBI says no indication of terrorism . Witness : ` ` It was just a # ##zone down there '' Two gun ##men are recovered at the scene . The third died from a self - inflicted gunshot wound , authorities say .