Published: Nov 04, 2011 11:46 PM EDT
Updated: Nov 04, 2011 11:47 PM EDT

CAPE CORAL, Fla -- Garrett Kern, one of southwest Florida's most wanted men, remains in custody in Chicago. He was arrested Thursday as he walked out of an area shelter.

 Cape Coral detectives questioned Kern for hours Thursday night. Today, they're not saying what Garrett Kern revealed. Right now they're heading back to southwest Florida, but without Kern.

The 23-year-old is still in custody in Cook County, Illinois. He is still considered a person of interest in the disappearance of his step-father James Arthur.

"They interviewed him for several hours last night and following up on some details that came out of that interview and then they'll be coming home," said Lt. Tony Sizemore with the Cape Coral PD.

He says detectives got several leads in the case but are not saying what those leads are. They will not comment about James Arthur's car either, a vehicle some believe Kern was driving in Chicago.

Thursday, October 27th is the last known time James Arthur is seen alive, with Garrett Kern by his side. This was just hours before Kern left southwest Florida and headed for Chicago.

Police arrested him there yesterday near Pacific Garden Mission, a religious shelter. It's not known when Kern will return here to southwest Florida.

"That's still up to the court system to work out," said Sizemore.

Kern is being held on a warrant for grand theft auto.