MARTINEZ, Calif. (AP) – Two men and a teen were charged in the alleged gang rape of a San Francisco Bay area lesbian, an incident that has sparked protests and an outpouring of support for the 28-year-old woman.

Prosecutors on Tuesday charged 31-year-old Humberto Hernandez Salvador of Richmond and 21-year-old Josue Gonzalez, who has Richmond and San Rafael addresses, with kidnapping, carjacking and gang rape in last month’s attack.

The pair did not enter pleas when they appeared in Contra Costa County Superior Court but asked the court to appoint attorneys to represent them. Salvador was being held at Contra Costa County jail in lieu of $2.2 million bail. Gonzalez’s bail was set at $1.9 million.

They could be sentenced to life in prison if found guilty, prosecutors said.

Darrell Hodges, 16, was charged as an adult with similar offenses Monday. A 15-year-old boy whose name has not been released was also arrested last week on suspicion of participating in the Richmond attack.

Hate-crime enhancements were added to charges against Salvador, which could mean a more severe sentence if he is convicted. Authorities say the woman was taunted for being a lesbian during the 45-minute assault. Salvador was also charged with being armed with a gun.

A fourth man being sought in the case turned himself in to police on Jan. 1, hours after authorities announced the arrests of the three others in the attack, police said.

Gonzalez was arrested on a $1 million arrest warrant for gang rape, kidnapping and carjacking, said police Lt. Mark Gagan.

Gonzalez asked for an attorney when he arrived at the police station but said nothing about his alleged role in the attack, Gagan said.

The woman, who lives openly with a female partner, was attacked on Dec. 13 after she got out of her car affixed with a rainbow gay pride sticker, according to investigators.

She was raped multiple times inside and outside the vehicle and left naked outside an abandoned building while the alleged assailants took her wallet and drove off in her car, police said.

The brutality of the attack shook even seasoned investigators in Richmond, a city of about 100,000 across the bay from San Francisco with one of California’s highest homicide rates. Police say they have received hundreds of calls from across the country offering money and support for the woman.

“The crimes that were committed at face value were shocking,” Gagan said. “But when it was revealed there was also a hate crime enhancement, it really prompted outcry.”

The case has galvanized gay rights advocates and bloggers to seize on the attack to highlight violence against gays and lesbians. Supporters have also been working to raise money for the woman, her partner and her daughter as they deal with the trauma of the attack.