RACINE COUNTY, Wis. (CBS 58) -- We're hearing the 911 calls from the night a man caused a disturbance on a Milwaukee to Chicago Greyhound bus.

"Racine County Dispatch, Can I help you?"
"Hey, It's Milwaukee County. We have a Greyhound Bus that has a male Hispanic on the bus, making threats that he's going to kill everyone in the bus."

The incident happened back in January on I-94 near the Wisconsin-Illinois state line.

Witnesses said Margarito Vargas-Rosas claimed to have a gun and was threatening passengers which led to a police chase.

"Apparently he has a gun in his hand."
"Oh, he does?"
"Yeah and now he's throwing up gang signs for another caller. Okay, alright hold on one second, let me get this call in right away."

A gun was never found.

Vargas-Rosas was deported last month.