OAKLAND -- On the anniversary of her death, police are calling for new attention in the still-unsolved slaying of a transgender woman by asking the public for help in finding her killer.

Brandy Martell, 37, was shot to death on April 29, 2012, while she was sitting in a car in downtown Oakland with three friends. She was killed about 5:20 a.m. at 13th and Franklin streets.

No one else was injured.

In an effort to get the word out and generate leads, police were planning to attend a candlelight vigil set for 6:30 p.m. Monday at the scene of the killing.

Police and Crime Stoppers of Oakland are offering up to $10,000 in reward money for information leading to the arrest of the killers. Anyone with information can contact police at 510-238-3326 or the homicide TIP LINE at 510-773-2805 or Crime Stoppers at 510-777-8572 or 510-777-3211 or by email at Oaklandhomicide@oaklandnet.com.

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.