India, June 29 -- Dark gray smoke was seen rising east of Redwood Road in Castro Valley, reportedly near Castro Valley Boulevard, according to several posts circulating on social media.

Fire crews are working to contain a major residential fire in Castro Valley that broke out at a home on Queen Street on Saturday afternoon.

According to NBC Bay Area, the blaze was reported shortly before 4:15 p.m. Authorities said the fire posed a threat to neighboring properties, prompting officials to escalate the response and call a three-alarm fire as firefighters battled to prevent the flames from spreading.

One Facebook user shared multiple photos appearing to show the scene and wrote, "Structure fire currently taking place on I believe Queen in ...