FAIRBANKS -- A man who reportedly told police he was the largest heroin dealer in Fairbanks was arrested this week after authorities say he failed to keep a promise to act as an informant.

Robert Dorton, 34, was arrested last month after police say drugs were found in his car when he was stopped for reckless driving. Officer Avery Thompson recognized Dorton as someone with a "reputation as a drug dealer," according to the criminal complaint obtained by the Fairbanks Daily News-Miner.

Thompson said Dorton became nervous when asked if there were drugs in the vehicle and the man's phone didn't stop ringing during their brief talk.

Police checked Dorton's car for drugs because one of the release conditions of another pending drug case required him to submit to vehicle searches.

The criminal complaint said that an orange matchbox contained a significant amount of methamphetamine and a small mint box had a "distribution quantity" of a prescription medication made of morphine and marijuana.

Dorton agreed to cooperate with the Statewide Drug Enforcement Unit, police said. He was taken to the trooper post, where he told police he was the largest heroin dealer in Fairbanks and had multiple people working for him.

He provided little information about local dealers and primarily spoke about out-of-state drug connections, police said.

Police said in the complaint they released Dorton to "appraise" his level of cooperation. He was re-arrested this week because he "had not performed as he had promised."

He has been charged with felony drug misconduct for the alleged possession of methamphetamine and morphine.