Police block the area where a suspicious vehicle is parked on the west side of the Kansas Judicial Center, across the street from the statehouse in Topeka, Kan. Police say a man is being questioned in Topeka after allegedly phoning in a threat against the Kansas governor's office. Capitol police spokesman Patrick Saleh says another man is being questioned Wednesday afternoon about a suspicious vehicle parked near the Statehouse. The Topeka Capital-Journal report the two events don't appear to be related.

Topeka ? A man detained after homemade bombs were found inside his pickup near the Kansas Statehouse will not face federal charges, a federal law enforcement spokeswoman said Thursday.

Spokeswoman Trista Frederick of the federal Bureau of Alcohol, Tobacco, Firearms and Explosives said the agency helped with the investigation but that the case is being handled by Topeka authorities. She did not elaborate on why the matter wouldn’t become a federal case.

Police in Topeka arrested two men Wednesday in what authorities described as unrelated incidents involving potential threats against the Statehouse.

The first involved the pickup, found in a parking lot for the Kansas Judicial Center, across the street from the Statehouse. Officers arrested the owner in an underground tunnel linking the Statehouse and a state office building.

Separately, police arrested and jailed a 37-year-old man accused of making a threatening phone call to Gov. Sam Brownback’s office.

The man, who is not being identified by The Associated Press because no criminal charges have been filed, appeared in court Thursday by video conference from the local jail.

“I’m sorry about all this,” he said, before presiding District Judge Steven Ebberts interrupted him to remind him that any statements he made could be used as evidence against him in court.

A Shawnee County prosecutor told a judge her office is considering a criminal threat charge against the man, who was arrested at a Topeka motel. Ebberts set his bond at $25,000.

Making a criminal threat is a felony that can result in a prison sentence of up to seven months for a first-time offender, though state law assumes a conviction will result in probation. The man was arrested on suspicion of harassment by telephone, a misdemeanor.

Authorities said the man has no permanent address but his last known home was in Columbia, Mo. He told Ebberts he was planning to return to Salina, 100 miles west of Topeka, after spending the winter in Tennessee and Missouri, and in court he gave the address of a Salina motel as his home.

The man told Ebberts he didn’t understand the severity of the potential charges against him and. Upon learning that unless he was released on bond, he’d spend up to two weeks more in jail awaiting another court appearance, he said: “What do they do with capital murderers? Oh, my God.”

Authorities have released no information about the owner of the pickup truck found with the homemade bombs. A spokeswoman for local law enforcement agencies involved in the investigation didn’t immediately return telephone messages seeking comment.

Officers investigated the pickup Wednesday morning after a state employee called to say it was parked in a restricted lot without a state worker tag. An officer saw suspicious objects inside, including an empty gun holster, and authorities called in the Topeka Police Department’s bomb squad.

Authorities temporarily blocked traffic and access to the parking lot. The black Ford with no hood and a beat-up front grill, had been removed from the Judicial Center parking lot by Thursday morning.

The truck carried a specialty Florida license plate issued only to qualified U.S. military paratroopers. It also had a special forces sticker on its bumper and stickers on its back window saying, “Welcome to America. Now speak English” and “Does my American flag offend you? Call 1 800 LEAVE THE USA.” The gate of the pickup bed bore a decal from a dealership in Ocala, Fla.

The Associated Press attempted to check the license plate number with the Florida Highway Patrol, but officials declined to provide information about the vehicle’s owner.

The pickup incident and the phoned-in threat to Brownback’s office came the same day a Kansas House committee opened three days of hearings on several bills designed to crack down on illegal immigration, backed by Secretary of State Kris Kobach, a former law professor who helped draft tough laws in Alabama and Arizona.

Authorities said neither arrest was connected to a coinciding rally at the Statehouse that was protesting policies pursued by Brownback, Kobach and other Republican officials.