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SACRAMENTO — A bicyclist was left unconscious and bleeding after colliding with a vehicle Saturday in Sacramento.

“My son is fighting for his life right now and to see him like that, it’s just killing me. It’s breaking my heart,” said Elisa Castellanos.

Castellanos’ son, Francisco Rodriguez, has had to have part of his skull removed to relieve swelling from the traumatic brain injury a hit-and-run driver caused when they left him face down and unconscious around 2 a.m. Saturday.

A passing driver at Alhambra Boulevard and T Street found him and got him help.

“They have him highly sedated. They’re watching to make sure he doesn’t get pneumonia or he doesn’t have seizures. They just said it can take weeks,” Castellanos said.

No witnesses have come forward with information about the crash and the police department has not been able to identify the vehicle involved.

“I don’t know if he’s going to wake up or not,” Rodriguez’s brother, Jimmy Hinojosa, told FOX40 on Tuesday. “I don’t know if he’s going to be permanently damaged, if he’s going to die in here, I don’t know. It’s just my older brother and it’s just tough seeing him like this.”

The two brothers were out riding their bikes with a cruising club until just a few hours before Rodriguez was hit. While Hinojosa wrapped up his ride early, his fun-loving, always eager to socialize brother stayed late to hang out with friends.

“He’s a really good dude,” said Rodriguez’s friend Brian Chandler. “Like when I was homeless, when I didn’t have nothing, he took me in, made sure I was fed.”

That giving, gracious spirit is what has dozens of friends and family members praying for Rodriguez at UC Davis Medical Center.

Though the passing driver who found Rodriguez gave paramedics his driver’s license and police gave the hospital his ID, officers say the hospital had Rodriguez listed as a “John Doe.”

“He had surgery on Saturday and we didn’t even know about it,” Castellanos said.

The driver who found him sent him a card and told FOX40 she was afraid he might die without his family knowing.

UC Davis Medical Center sent FOX40 the following statement regarding Rodriguez’s case:

While privacy laws prevent us from discussing specific details about this case, we are reviewing what happened to determine why the family was not able to be immediately notified, and to prevent this from happening again. We are sorry we were unable to notify this family sooner, as we know how important it is to let loved ones know someone has been hospitalized.

Rodriguez’s relatives aren’t the only ones praying for his recovery, so are his fans. Rodriguez raps under the name Paco Via.

He and Chandler released a song called “Heaven” six months ago to remember lost loved ones.

Those who love him say he is an angel but one they need to stay with them on earth for a while longer.

Francisco Rodriguez’s employer started a GoFundMe Fundraiser to help his family with medical expenses.