• A 20-year-old college student was fatally shot in a San Francisco park while playing 'Pokemon Go.'

A 20-year-old college student was fatally shot in a San Francisco park while playing 'Pokemon Go.' (Photo : Getty Images/Lam Yik Fei)

A 20-year-old college student was shot dead while playing the new virtual reality game "Pokemon GO" near Fisherman's Wharf in San Francisco.  The assailant remains at large.

According to Los Angeles Times, Calvin Riley was fatally shot by an unknown gunman at around 10 p.m. on Saturday as he was walking on the promenade at Aquatic Park playing the popular game on his cellphone.  Aquatic Park is located next to Ghirardelli Square in San Francisco Maritime National Historic Park.

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The report wrote that investigators are still trying to find out what prompted the shooting.  Sgt. Robert Jansing of the U.S. Park Police told LA Times that the shooter did not take any of Riley's belongings not did he attempt to rob him.

ABC 7 News wrote that the police found Riley with a bullet wound to his torso.  The student, who is studying kinesiology at San Joaquin Delta College and is on the college's baseball team, received first aid but did not make it.

ABC 7 also talked with John Kirby, a family friend of the Rileys, who said that the victim was with another friend at the park.  He said that the two played Pokemon GO together, but Riley got a little ahead and went around the corner.  

Kirby also said that Riley and his friend had earlier noticed someone suspiciously watching them from the top of the hill overlooking the park.  However, it was already dark and they were looking at their cellphones most of the time.

Kirby further told ABC 7 that no confrontation took place and that the gunman just came up to Riley, shot him in the back, and quickly ran away.  He described the incident as "just senseless."  He also said that the friend heard the gunshot and saw Riley fall. 

Although the incident took place late at night, there were still several people at the park, which is a popular tourist attraction and draws an estimated 4 million visitors annually, Lynn Cullivan, a spokesman for the park, told LA Times.

However, despite this, Jansing said no witnesses have come out to say they have seen the assailant.  Investigators are still collecting footage from surveillance cameras within the vicinity and they are hoping these would reveal the suspect's identity.

Watch the news report about the incident below: