A former friend of the gunman who slaughtered nine people outside of a Dayton, Ohio, bar said he cut off their friendship when the mass shooter held a gun to his head about five months ago, a report said Monday.

Will El-Fakir, who went to the same high school as gunman Connor Betts, told the Dayton Daily News that Betts had been “getting a little violent with friends” and began to bring guns around them in recent months.

Betts then held a gun to El-Fakir’s head about five months ago for no reason, he told the newspaper. El-Fakir said he cut ties with Betts after the incident.

El-Fakir told the newspaper he recounted the incident to Dayton police officials Sunday afternoon.

Masked and clad in a bulletproof vest, Betts, 24, opened fire with an AR-15-style rifle outside a busy stretch of bars in Dayton’s downtown Oregon District at about 1:05 a.m. Sunday, cops have said.

His first victim was his 22-year-old sister, Megan, and he was about to enter a packed bar where scores of people had run for cover when he was shot dead by cops, ending his spree less than a minute after it began.

A motive for the shooting has not been released.

El-Fakir added that he’d witnessed strange behavior from Betts before the gun incident.

“There were times when he went to bars and just scoped the place out,” El-Fakir said.

“He’d say, ‘If I brought this-or-that through here, it would have done some damage.’”