WILLOW PARK, Texas -- Police have arrested a 33-year-old suspect in the shooting deaths of two females outside a bank Saturday night in Willow Park, located in Parker County.

Authorities identified the shooter as 33-year-old Christopher Wall, of Weatherford, and the victims as Ashley Phorence, 23, and Krista McClellan, 21.

According to Willow Park police, officers found the two women shot dead at the scene after they were dispatched to a shooting call in the 4100 block of East Interstate 20.

The local police department worked with the Hudson Oak Police Department, Parker County Sheriff's Office and the Texas Rangers to identify and apprehend Wall, officials said in a statement released Sunday. They haven't released a motive for the shooting.

According to an arrest affidavit, a third woman who was with the victims told police that the trio had driven from Arlington to the bank to meet Wall. The witness says she stayed in the car as Phorence and McClellan got into another vehicle with the suspect. A short time later she says the women "began to hurriedly exit the vehicle" when Wall got out and began shooting them.

The woman told police that she met Wall on the social media app, Backpage, and had gone to his place of employment with McClellan to give him a massage on Nov. 3. The woman told officers that she and McClellan then extorted Wall for about $8,000 "by convincing him they had recorded him soliciting them for sex during the massage," the affidavit states.

She said she believed McClellan and Phorence contacted him and set up the meeting for the next day to "get more money from him."

Wall was charged with capital murder and booked into the Parker County jail. His bond is set at $750,000.

Authorities say the investigation continues and ask anyone with information pertaining to the case call the Parker County Sheriff's Office at 817-594-3213.