Officials have identified the man shot and killed at at Scottsdale-area gas station on Sunday night.
Salt River police said 35-year-old Justin Gaston of Mesa was killed around 8:30 p.m. at the Chevron station at the intersection of Hayden and McKellips roads.
According to police, witnesses said they saw a passenger vehicle driving away from the scene after a shot was heard.
An hour later, police spotted a vehicle matching the description. The vehicle failed to stop and a short pursuit started.
Police said two females were inside the vehicle and were eventually detained. They were booked into jail on unrelated charges.
Authorities said they were still piecing together what happened leading up to the shooting. Salt River police are asking for other witnesses who alerted the gas station clerk to come forward to answer some questions as well.