Oakland police say a reward of up to $15,000 is being offered for information leading to an arrest after a 15-year-old girl was shot and killed while walking in East Oakland Sunday afternoon.

Investigators say Jubrille Jordan was gunned down as she and a 14-year-old boy walked to a BART station around 3:40 p.m. Sunday.

The Oakland Tribune reports that Jubrille and the unidentified boy were shot by another teen -- believed to be between 13 to 16 years old -- who approached them and started shooting.

Police say 14-year-old boy is expected to recover after being shot in the foot.

The Tribune says the fatal shooting was Oakland's 131st homicide of the year, the highest number since 148 people were killed in 2006.

Monday afternoon, Oakland police told KTVU they were still interviewing the young survivor of the attack as well as other witnesses about the shooting.

Oakland's Police Chief Howard Jordan renewed his call to the community to help identify the suspect, described as a boy, 13-15 years old, wearing a red t-shirt.

"It's disheartening. It's embarrassing to the city and to myself as police chief," said Jordan

Police said the suspect and his victims knew each other, but the fact that this was not a random crime is small comfort to the people who live here.

Area resident Maria Macias said the Lion Creek Crossing housing complex has seen its share of violence. Few expect the police department to solve its problems.

"I don't think it's safe. This is the fourth homicide here," said Macias. "They need help. They can't do it by themselves. They can't be in all these different places at the same time."

Jordan pledged his commitment to end gun violence, saying that in 2013 he planned for the department to return to neighborhood policing and add 70 new officers to the force.

Of those 131 homicides, 12 of the victims were 18-years-old or younger.