Pokemon Go murder: Sketch, surveillance photo released in Calvin Riley's slaying

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SAN FRANCISCO (KTVU) -- Police are hoping that the release of new evidence will result in an arrest in the slaying of a college baseball star who was shot and killed two months ago while playing Pokemon Go.

The U.S. Park police have released a composite sketch of the man they believe fatally shot Calvin Riley on Aug. 6 -- as his parents pleaded Wednesday for anyone with information to come forward.

The sketch of the possible suspect shows an African American male. And investigators said a surveillance photo of the suspected getaway car indicates that the vehicle was driven by a white woman with blonde hair. 

"I want him back," said Sean Riley, Calvin's father. "It's starting to hit home now (and) it's real. It's sad."

Police have continued their search for a suspect in the death of Calviin Riley, a popular student who played baseball for Delta Community College in Stockton after attending Serra High School in San Mateo.

"Every day it's sad," his father said. "Every day I wake up and every day I go to bed. It's a nightmare."

Calvin Riley was walking with a friend along the edge of the water near Ghirardhelli Square on Aug. 6 while playing Pokemon Go. The victim was shot and killed shortly before 10 p.m.

"Cal was turning (while) playing the game . . . and he had his back to the shooter," said his mother Kariann. "And the shooter was up there and hit him in the back."

Jerry Marshall, a spokesman for the US Park Police, said the vehicle was a white, four-door Toyota Avalon "that would have been traveling up and down Van Ness Avenue in the area of Aquatic Park."

Investigators said the car was built between 2013 and 2015. It was seen driving in the area during the time when Riley was slain. 

"I know my son felt safe here," his mother said. "He felt safe and he was walking with his friend playing a game and he was shot in the back for no reason."

The family has two other children who are struggling with the death of Calvin. The family used to spend time together before he was killed.

Anyone with information was asked to call U.S. Park Police at 415-561-5150.

By KTVU reporter Tara Moriarty.