DENVER - The Latest on the arrest of a suspect in connection with a homemade explosive left outside a Colorado police station (all times local):

3:38 p.m.

A man suspected of leaving a backpack bomb outside a Colorado police station told an employee at the hotel where he was staying that he was in Nederland to visit an old friend who is a professor.

J.P. Farrell, a front desk agent at The Boulder Creek Lodge, says 64-year-old David Michael Ansberry stayed for about two weeks, left, and then returned. Nederland's police chief saw someone matching Ansberry's description leave the hotel when it was evacuated during the Oct. 11 bomb scare.

Court documents describe Ansberry as 3 feet 6 inches tall and 100 pounds, wearing a pony tail, ball cap and using crutches. They say he tried repeatedly to remotely detonate the bomb using a cellphone but failed.

Ansberry was arrested over the weekend in Chicago and faces a federal explosives charge.

1:10 p.m.

Law enforcement officials say a man suspected of leaving a backpack bomb outside a Colorado police station was spotted on surveillance video from a store where he bought a cellphone used in the device.

Two officials with knowledge of the investigation tell The Associated Press that 64-year-old David Michael Ansberry was noticeable because he is 3 feet 6 inches tall.

The officials spoke on condition of anonymity because they weren't authorized to publicly discuss the case.

One of the officials says the device was designed to be remotely detonated using a cellphone but failed.

Ansberry was arrested over the weekend in Chicago.

A detective found the device in a backpack Oct. 11 and brought it into the Nederland police station, believing it was lost property. It was eventually detonated in a parking lot.

— Associated Press writers Sadie Gurman in Denver and Michael Tarm in Chicago

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10:20 a.m.

The U.S. attorney's office in Colorado has officially confirmed that a California man was arrested in connection with a homemade explosive left outside a police station in a Colorado mountain town.

The office tweeted Monday that the man is believed to have placed the device. They didn't immediately identify him.

But two law enforcement officials with knowledge of the investigation told The Associated Press that 64-year-old David Michael Ansberry was taken into custody over the weekend in Chicago. The officials spoke on condition of anonymity because they weren't authorized to speak publicly about the case.

A detective found the device in a backpack Oct. 11 and brought it into the Nederland police station, believing it was lost property. It was searched by robots and eventually detonated in a parking lot.

— Associated Press writers Sadie Gurman and Eric Tucker

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9:05 a.m.

Law enforcement officials have identified a man arrested in connection with a homemade explosive left outside a police station in a small northern Colorado town.

Two law enforcement officials with knowledge of the investigation told The Associated Press that 64-year-old David Michael Ansberry was taken into custody over the weekend in Chicago. The officials spoke on condition of anonymity because they were not authorized to speak publicly about the case.

A detective found the device in a backpack Oct. 11 and brought it into the police station, believing it was lost property. Robots searched the device and it was eventually detonated in the parking lot of the town's main retail complex, a strip mall that houses the five-officer police department.

Investigators say it was an active explosive that failed to detonate.

U.S. attorney spokesman Jeff Dorschner declined to comment.

— Associated Press writers Sadie Gurman and Eric Tucker

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7:54 a.m.

Authorities have arrested a man in connection with a homemade explosive left outside a police station in a small northern Colorado mountain town.

A man was taken into custody over the weekend in connection with the Oct. 11 incident in Nederland, two law enforcement officials with knowledge of the investigation told The Associated Press. The officials spoke on condition of anonymity because they were not authorized to speak publicly about the case.

A detective found the device in a backpack and brought it into the police station, believing it was lost property. Robots searched the device and it was eventually detonated in the parking lot of the town's main retail complex, a strip mall that houses the five-officer police department.

Investigators say it was an active explosive that failed to detonate.

It was not immediately clear what charges the man would face. U.S. attorney spokesman Jeff Dorschner declined to comment.

The case rattled this mountain-ringed town of 1,500 people southwest of Boulder best known for its love of legal marijuana and its annual celebration of a frozen corpse that draws tens of thousands of revelers.

— Associated Press writers Sadie Gurman and Eric Tucker

News from © The Associated Press, 2016