San Francisco police respond to 4 shots fired incidents between Thursday morning, early Friday

SAN FRANCISCO (BCN) - San Francisco police responded to four separate cases between Thursday morning and early Friday morning in which shots were fired but no victims were found.
The first case was reported at 11:39 a.m. Thursday at Dwight and Girard streets in the Portola District.
Police received several calls of shots fired, and video surveillance reviewed by investigators showed two cars in the intersection when the shots were fired, but no victims were found and police did not determine who opened fire.
At 12:18 p.m., someone reported hearing a gunshot in the 1400 block of Shafter Avenue in the Bayview District. Officers responded and found bullet fragments but no victims or casings, police said.
At 11:02 p.m., officers responded to an activation of the ShotSpotter gunshot detection system in the 200 block of South Van Ness Avenue.
Investigators found video of a male suspect opening fire and then fleeing on foot south on Minna Street. A second male suspect was with the shooter and fled west on 14th Street, according to police.
No victims or property damage was found and the two suspects remain at large, police said.
Then at 4:11 a.m. Friday, officers responded to another ShotSpotter activation, this time in the 700 block of Missouri Street in Potrero Hill.
They arrived to find shell casings but no damage to any vehicles or buildings, and no victims were found, police said.
Anyone with information about any of the shootings is encouraged to call the Police Department's anonymous tip line at (415) 575-4444 or to send a tip by text message to TIP411 with "SFPD" in the message.