A Good Samaritan has been missing since Tuesday afternoon after they jumped into a body of water in California to help rescue a mother and daughter whose SUV had crashed.

The mother and her five-year-old daughter were seen standing on their submerged vehicle after it crashed into the body of water in Tracy, about an hour east of San Francisco.

She had helped the daughter get to the rear of the SUV before it disappeared under water, witnesses said. 

A male onlooker jumped into and managed to help the child to shore, before the second Good Samaritan also dove in to help the mother, who had already gone underwater, according to the California Highway Patrol.

The unconscious mother washed ashore a short time later with major injuries, but the Good Samaritan did not resurface. 

A good Samaritan has been missing for since Tuesday after they jumped into a body of water in California to help rescue a mother and daughter whose SUV had crashed

The unconscious mother washed ashore a short time later with major injuries, but the good Samaritan did not come back up

Their totaled SUV was seen being pulled out of the water on Tuesday night

Police and the fire department searched for the unidentified man until darkness fell on Tuesday.

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The child was unharmed, but the mother was hospitalized in critical condition after being revived by paramedics.

Officials said their car veered off the road as they drove on a bridge before striking a tree and going into the water. 

‘It sounds like a very short period of time had elapsed from when the car was visible and then no longer visible,’ officer Schmier told KCRA. 

Their totaled SUV was seen being pulled out of the water on Tuesday night. 

The missing good Samaritan has not been identified.

‘It’s not my part to say it for him, but I’m glad he did it, especially for the child and the mother. But he seems like a good guy. He just jumped in,’ witness Anthony Amari told KRCA. 

Police said they are investigating the cause of the crash. 

DailyMail.com has reached out to the California Highway Patrol for more information.