HOLLAND, Mich. — Federal investigators say that a man convicted of murder in the late ’90s was arrested in Holland and is facing drug and weapons charges.

According to federal court documents filed Sept. 25, Harold Shields was arrested by Holland Police Sept. 6 on charges of felon in possession of a firearm and operating a vehicle while intoxicated. Officials say they found a 9mm semiautomatic pistol in his vehicle.

Shields later said the gun belonged to his ex-girlfriend, according to the court documents.

The Bureau of Alcohol, Tobacco and Firearms had been investigating Shields for drug charges since June after receiving a tip that he was selling cocaine, according to federal court documents. Shields allegedly sold cocaine to undercover investigators four times between June and September.

Federal investigators say they executed a search warrant at a home in the 13000 block of Traditions Way on Sept. 18, 12 days after Shields was arrested on local charges by Holland Police. They found cocaine, heroin and marijuana in his vehicle and 9mm ammunition in the home, according to a release.

Officials say Shields admitted to being convicted of murder in Illinois in 1997 after being arrested by Holland Police. According to MLive, he was sentenced to 33 years in prison in that case after pleading guilty to two counts of first-degree murder and four counts of attempted-first-degree murder.

He is facing federal charges of possessing narcotics with intent to deliver and being a felon in possession of a firearm.