He's a survivalist with an extensive shooting background and a grudge against law enforcement, officials say. And now authorities worry the man suspected of gunning down two Pennsylvania State Police Troopers may be on the hunt for more officers.
Eric Mathew Frein "has made statements about wanting to kill law enforcement officers and also to commit mass acts of murder," Pennsylvania State Police Commissioner Frank Noonan told reporters Tuesday.
"He has very strong feelings about law enforcement and seems to be very angry with a lot of things that go on in our society."
Read more: CNN
The government plans to give U.S. retailers a list of materials that can be used in explosives and ask them to look out for suspicious behavior as a way to combat domestic terrorism, the homeland security secretary said on Wednesday. On the eve of the 13th anniversary of the Sept. 11 attacks, Jeh Johnson said the so-called home-grown or "lone wolf" attack like last year's Boston Marathon bombing was the hardest to detect and the one he worried about most.
He said his department would issue a public advisory to retailers this week identifying the materials and suspicious behavior to look for in anyone buying large quantities of them. Homemade bombs in pressure cooker pots were placed at the finish line of the famous race in Boston on April 15, 2013, killing three people and injuring 176 others in the worst attack on U.S. soil since Sept. 11, 2001.
"So we can't and we shouldn't prohibit the sale of a pressure cooker," Johnson told the Council on Foreign Relations in New York. "We can sensitize retail businesses to be on guard for suspicious behavior by those who buy this kind of stuff."
Read more: Reuters