In a dramatic rescue, the SFFD, SFPD and Coast Guard responded to the waters off Pier 45 this afternoon, where dozens of people were in the water after a boat capsized shortly before 4:30pm, with some trapped under the hull.

BREAKING: BAY RESCUE. report of overturned vessel. Up to 30 ppl in water, with minors. Pier 45. #SFFD responding. More to follow.

— SF Firefighters 798 (@SFFFLocal798) October 8, 2016

BREAKING: 30 Kids in water some trapped off Pier 45 @sffdpio sending in divers and chopper @KTVU pic.twitter.com/Ky0casdK0R

— Ross Palombo (@RossKTVU) October 8, 2016

#SF firefighters are on the scene near #Pier45 after a boat carrying about 30 juveniles capsized. https://t.co/p8ywDUORDo pic.twitter.com/gJoVBbKg4Z

— ABC7 News (@abc7newsbayarea) October 9, 2016

According to fire officials, all passengers aboard the vessel have been accounted for.

Update, 10/9: The Chronicle reports that two children are in critical condition following the accident. A five-year-old was unconscious and not breathing after the rescue, and was taken to the hospital in critical condition; another child, age unknown, is in critical but stable condition.

It's still unknown what caused the boat, a 30- to 40-foot motorized yacht, to capsize and sink about 100 yards from shore.  

Update, 10/11: The unconscious child who was in critical condition is in much better shape, and was released from the hospital today. 

The 4 yo CPR child from this weekends boat rescue went home in great condition today. THANK YOU @SFPDCares and all WHO DID AN AMAZING RESCUE pic.twitter.com/SXh3Uga7Ed

— San Francisco Fire (@sffdpio) October 11, 2016