(CBS Detroit) — A Metro Detroit family is calling on the public for help in gathering information on a suspect accused of killing two sisters.

Authorities say Dominique Parchmon, 30, and Shyanna Hall, 18, were shot on Jan. 5 in the 3000 block of Niagara Street in Wayne.

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Police believe Parchmon’s live-in boyfriend, 32-year-old Christopher Greer is responsible.

According to the U.S. Marshals, Parchmon was pronounced dead at the scene. Hall later died from her injuries at a hospital. Authorities say she named Greer as the shooter before her death.

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Police say Greer fled the scene that night.

Crime Stoppers is offering a $2,500 reward for information.

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