According to detectives from the Snellville Police Department, they are expanding their focus in the shooting death of the Conyers mother due to witness statements that indicate the killer may have been female.

It was always clear to authorities that the killer wore a fake mustache and a wig, but surveillance tapes also show a very slender frame and that the killer's height is around 5-feet 7-inches. Witnesses also reportedly told detectives that the killer had no stubble.

Though they have expanded their focus, they are not ruling out any suspects at this time.

Strube was killed around 6 p.m. on April 26 in a busy Target parking lot in Snellville. She had just met her estranged husband to pick up her 18-month-old son. She completed the parental exchange and her estranged husband drove away. That's when the killer approached. Surveillance video shows that person walking calmly through the parking lot toward Strube's SUV.

Witness statements reportedly indicate the two argued and Strube yelled for help before the killer shot her once in the head in front of her toddler who was inside the vehicle at the time, then walked away and left the parking lot in a white early-90s Ford pickup.

Authorities say that Strube's husband is not the killer, but they have not ruled out his involvement in some other way and are still investigating to see if he was involved in her death. Police have said that they believe that that person's sole purpose was to kill Strube.

Anyone with information on the suspect vehicle or the person responsible is asked to call Snellville Police at (770) 985-3555 or CrimeStoppers at (404) 577-TIPS. If a tip to CrimeStoppers leads to an arrest, there is a $2,000 reward.