Police responded to reports of an active shooter at the Islamic Center of San Diego, the county's largest mosque. Chairman Ahmed Shabaik confirmed in an email that at least one security guard had been killed, though authorities have not yet verified casualties. The police department described the situation as "active but contained" as they continued their response, with additional units arriving to secure the perimeter.

Mayor Todd Gloria acknowledged the active shooter situation on social media, urging residents to avoid the area. The incident raises concerns about security measures at religious institutions and potential impacts on local businesses that serve the surrounding community. Businesses in the vicinity may face operational disruptions as law enforcement continues to manage the active scene.

This developing story comes amid heightened tensions around places of worship across the country. The Islamic Center hosts daily prayers and regular seminars, serving a significant portion of San Diego's Muslim population. Police continue their investigation with no further details available at this time, but have established a perimeter around the facility.