The carnage continues.
The man who killed five people and wounded 16 others at Northern Illinois University in a suicidal rampage had recently become erratic after halting his medication, police said Friday.
The man, identified as 27-year-old former NIU student Stephen Kazmierczak, carried a shotgun to campus inside a guitar case and also wielded three handguns during Thursday's ambush inside a lecture hall, they said.
Law enforcement officials said Kazmierczak started buying his guns last August, all legally and all from the same gun dealer in Champaign, where he was enrolled at the University of Illinois.
He bought a Sig Sauer 9mm on Aug. 6 and a Highpoint .380 on Dec. 30. Two of the weapons — the pump-action Remington shotgun and a Glock 9mm handgun — were purchased less than a week ago, on Saturday, authorities said.
He had a valid permit required for all Illinois residents who buy or possess firearms, authorities said.