WATERVILLE — Two people were arrested for selling crack cocaine and oxycodone on Friday, police said, after a domestic dispute call hastened the arrests after a lengthy investigation.

Dorian White, 26, of 6 Union St. and Ashley Linn Loisel, 20, of 16 Fortier St., Winslow, were arrested after 2 p.m. Friday near the Waterville fire station after a passerby saw White grab Loisel by the neck and push her, according to Charles Rumsey, deputy chief for the Waterville Police Department.

White and Loisel had been at the center of a three-month long investigation into the sale of crack cocaine and oxycodone out of White’s Union Street apartment, Rumsey said. Another man, Lamar Mitchell, 23, of Bangor, was arrested after White’s apartment was searched.

In late September, detectives twice bought crack cocaine from a man they knew at the time as Stacks, Rumsey said.

With help from the Drug Enforcement Agency, Waterville police determined that Stacks was Dorian White and that he had a substantial criminal history in New York City, including possession of a loaded firearm, possession of a controlled substance and of tampering with evidence, according to Rumsey. He is wanted in New York for a probation violation.

“The way we were able to identify him was through tattoos, and we had an officer who dealt with him earlier in the summer and White gave the officer a fake name,” Rumsey said. “The officer looked at his tattoos and noticed on his left forearm a tattoo of a gangster Spongebob Squarepants. We were able to confirm with DEA agents and investigators in New York that White had the same tattoo in the same location.”

Officers also bought oxycodone and crack cocaine from Loisel in late September and believed that White was working for a larger network of drug dealers, Rumsey said.

“We believe that White is part of a fairly sophisticated drug organization based in New York that sends dealers to other urban and suburban communities to distribute drugs,” Rumsey said. “This organization has supervisors, for the lack of a better term, that are involved in getting people up here and comfortable.”

Loisel was arrested after the domestic dispute call on a warrant for failure to appear, stemming from previous charges of operating after suspension and violating the conditions of her release, Rumsey said.

Police found $5,000 on Loisel when they searched her, and $14,000 on White. White was also in possession of eight 30 mg oxycodone pills, Rumsey said, and was arrested on two charges of unlawful trafficking in scheduled drugs from the September purchases, both of which are class B felonies, and a charge of unlawful possession of oxycodone, a class C felony. White was also charged with being a fugitive from justice and is being held at Kennebec County jail without bail.

In addition to the warrant, Loisel was charged with two counts of unlawful trafficking of a scheduled drug and one count of aggravated trafficking of a scheduled drug, which was sold in one of the city’s safe zones, Rumsey said. She was taken to Kennebec County jail on $10,750 cash bail. Both have a Feb. 11 court date at Kennebec County Superior Court.

“The arrest of White and Loisel was happenstance, it advanced our timeline a little bit,” Rumsey said. “The investigation on them was nearing its end and had we not contacted them yesterday, it would have probably been within the week.”

After White and Loisel were taken into custody, Mitchell and another man were in White’s Union Street apartment when police searched it, and he was arrested because police said he was in possession of a .45 caliber pistol. When police searched his car, they found one 30 mg oxycodone pill, Rumsey said.

Mitchell was charged with unlawful possession of oxycodone, a class C felony, and carrying a concealed weapon, a class A misdemeanor. He made $1,500 unsecured bail late Friday night and also has a Feb. 11 court date at Kennebec Superior Court.

When officers searched White’s apartment, they found large amounts of drug paraphernalia, a variety of cutting agents and perscription pills, Rumsey said. The lease to the apartment is in a female’s name, Rumsey said, and although she has not been charged, he anticipates a criminal charge coming.