(CNN) — (Breaking news at 7:04 a.m. MST)

Authorities have arrested Joshua Zimmerman, a Mississippi inmate who escaped two months ago and barricaded himself in a Chicago restaurant on Tuesday, the U.S. Marshals Service said Wednesday.

(Original story published at 4:34 a.m. MST)

An inmate who escaped from a Mississippi courthouse more than two months ago has barricaded himself in a Chicago restaurant just blocks from the site of the Democratic National Convention, officials said.

“It’s an ongoing process,” Chief Deputy Justin Smith of the DeSoto County Sheriff’s Office in Mississippi said at a press conference on Tuesday.

The 30-year-old escapee, Joshua Zimmerman, was alone in the restaurant and there was no danger to civilians, Smith said.

Zimmerman escaped from the courthouse in northwest Mississippi, about 25 miles south of Memphis, on June 14, and it is unclear how he got to Chicago, Smith said.

According to the US Marshals Service, he is wanted for murder, escape and armed robbery.

Marshals notified the sheriff’s office on Tuesday that Zimmerman had been tracked down at a restaurant and had barricaded himself inside the building, Smith said.

A video from CNN partner WBBM shows the Chicago Police Department’s SWAT team at the crime scene.

CNN has contacted the Marshals Service for comment.

The sheriff’s office hopes Zimmerman will be arrested and extradited to Mississippi so he can be questioned about his escape, Smith said.