Youth pastor Daniel Diaz, 33, was driving home from a church party with friends when he was shot and killed by an unidentified assailant in Pomona, Calif.
The shooting occurred just hours after a peace and prayer rally was held by community leaders against gun violence.
His mother tearfully said, "To the person who did this, if I could see you face to face, I would tell you that God loves you. And if you knew my son, my son would have loved you."
His girlfriend, Denise Lugo, said, "Daniel was wonderful. I loved him very much. I’m just brokenhearted, right now. I hurt so bad.”
A motive has not yet been released, and CBS Los Angeles reported that the police have no suspects.