Arkansas State University was on a brief lockdown following reports that armed men had been seen on campus. The incident was resolved by the police without a single shot being fired.

The university initially announced on Twitter that “males with weapons” were reported near the Student Union – a hub of campus activity.

It added that reportedly “the three males all wearing black were last seen walking north near Dean St.”

Report: The possible three males all wearing black were last seen walking north near Dean St. — Arkansas State (@ArkansasState) February 14, 2016

EVERYONE ON ASU CAMPUS STAY IN YOUR ROOMS AND GET SOMEWHERE SAFE THERE ARE PEOPLE DRESSED IN BLACK WITH GUNS — Hannah Dickey (@lildickeyy) February 14, 2016

However, CBS affiliate WREG later reported that there was just a single armed suspect, who was detained by the police.

No shots were fired at the campus, as the man surrendered to a SWAT team after the negotiations, Jonesboro Police Chief Rick Elliott said.

The suspect, who was identified as 47-year-old Brad Bartelt, was taken into custody.

A truck Bartelt drove into the middle of the campus was examined by the bomb technicians, AP reported.

The suspect had a 12-gauge shotgun, a can of gasoline, and a 100-pound propane tank in his truck, Elliott said, adding that Bartlet had poured some of the gas onto the vehicle at one point.