The window of a business on the 300 block of Grant Street, which is near Sutter, was shattered this afternoon by a fire cracker or firework, according to a San Francisco police spokesman.

Suspects were seen running from the business following the 3:50 p.m. incident, but no description is available, police Officer Albie Esparza said.

There were no injuries, and no one is in custody, Esparza said.

The incident is being investigated as a case of malicious mischief or vandalism to property, Esparza said.

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