Police line do not cross
File photo: US police tapeReuters

Police in San Francisco have told people to stay away from a popular park after three people were injured in a shooting on Thursday (4 August).

San Francisco Police Department told people on social media to "avoid the area of Doleres Park" and to expect delays and closures. Later on they added that they were "on the scene investigating a shooting that occurred".

The police department added that three people had been victims of the incident "at this time" and that all of the injured were being transported to hospital. Anyone with information is being asked to contact the police department.

A woman sitting in the park told the Associated Press that she heard a burst of gunfire before seeing person running while holding a gun. The woman told the news agency that the park was full of tourists and families and that she began yelling "It's actually a gun, it's actually a gun!" to warn people.

People ran in panic, she said, adding that she saw two people bleeding heavily who were taken away by emergency personel. SFGate.com reported police spokesperson telling media that one of the victims had life threatening injuries while the other two people's injuries were not life-threatening.

Another witness told the site that he saw a man holding a handgun with a grey hoodie over his head.

Police have not yet released further information about their investigation.

Anyone with information is asked to call the San Francisco Police Department Tip Line (415)575-4444 or Text a Tip to TIP411 begin the text with SFPD.