Authorities are seeking six suspected dealers accused of selling heroin, crack cocaine and prescription drugs in and around Butler.

The suspects were among the purported street-level dealers sought by the Butler County Drug Task Force during a drug sweep Tuesday.

The sweep netted nine arrests. One suspect was previously nabbed in Allegheny County on Sunday and another turned herself in to authorities Wednesday.

The defendants arrested earlier this week are in the Butler County Prison.

The following alleged dealers remain at large, according to recently released arrest warrants:

Cortney L. Anthony, 40, of Butler, who is charged with delivery, possession with intent to deliver, and possession of a controlled substance for the alleged sale of crack cocaine April 14 on North Monroe Street in Butler.

Melissa S. Graham, 25, of Butler, who is charged with delivery, possession with intent to deliver, and possession of a controlled substance for the alleged sale of heroin April 14 on Ridge Avenue in Butler.

Michelle A. Kennedy, 44, of Butler, who is charged with delivery, possession with intent to deliver, possession of a controlled substance, and criminal use of a communication facility for the alleged sale of the anti-anxiety prescription drug Klonopin at the Greater Butler Mart on Route 8 South in Butler Township.

Michael B. Merritt Jr., 24, of Butler, who is charged with two counts each of delivery, possession with intent to deliver, possession of a controlled substance, criminal use of a communication facility and possession of drug paraphernalia for the alleged sale of heroin June 17 on West Birch Street and on July 1 in the 400 block of South Main Street, both in Butler.

Daniel C. Sharp, 27, no known address, who is charged with delivery, possession with intent to deliver, and possession of a controlled substance for the alleged sale of crack cocaine March 5 in the 300 block of First Street in Butler.

Catherine A. Williams, 30, of Butler, who is charged with delivery, possession with intent to deliver, possession of a controlled substance, and criminal use of a communication facility for the alleged sale of the anti-anxiety prescription drug temazepam May 11 on Third Avenue in Butler.