St. Louis, MO (KSDK) - The reward for information leading to an arrest in the murder of a former Saint Louis University volleyball player has gone up again.

Twenty-three-year-old Megan Boken was killed Saturday, August 18 around 2:30 p.m. at the intersection of Maryland and N. Taylor. She was in her car when she was fatally shot in the neck. Police described the suspect as a black male with a medium complexion, standing 5'8" to 5'10" with a thin build and short hair. He was wearing a grey charcoal shirt, khaki pants, and white tennis shoes.

Police do not believe Boken knew the shooter and are investigating the case as an attempted robbery.

Boken, a 2011 SLU graduate, was a living in the Chicago area. She was in town for an alumni volleyball game on Saturday.

CrimeStoppers initially posted a thousand-dollar reward in the case, but that was quickly added to following $10,000 donations from the Washington University School of Medicine and from the Central West End Neighborhood Security Initiative. An anonymous donor contributed another $10,000 on behalf of friends of Megan Boken.

The reward was increased to $20,000 Tuesday in the case of a murdered former Saint Louis University volleyball player.

Megan's friends added to the previous $10,000 reward announced Monday for information leading to an arrest and conviction of the person who shot and killed 23-year-old Megan Boken.

Anyone with information is asked to call CrimeStoppers at 866-371-8477.

A funeral for Megan Boken is set for Thursday, August 23 at 11 a.m. at St. Michael Catholic Church, 310 S. Wheaton Avenue in Wheaton, Illinois.

KSDK