East Palo Alto police have arrested two youths on suspicion of murder related to the fatal June 13 shooting of a 15-year-old boy, interim police Chief Jeff Liu said on June 17.

The East Palo Alto Police Department, in partnership with the San Mateo County District Attorney's Office, San Mateo County Sheriff's SWAT Team and Palo Alto Police Department SWAT Team, served two search warrants on in the morning on June 16, in East Palo Alto and Palo Alto and arrested the pair. Both were booked into Juvenile Hall, Liu said.

Law enforcement officers seized a semi-automatic pistol with an extended magazine at one of the youths' homes. The names and photos of the defendants are not being released because they are minors, Liu said.

Police were tipped off to the crime on June 13 at 9:04 p.m. by the activation of the city's Shotspotter audio detection system on the 1900 block of Manhattan Avenue. Officers located a 15-year-old victim near the alley between Manhattan and Euclid Avenue suffering from gunshot wounds. Officers applied first aid before paramedics transported him to the hospital. He died of his injuries.

The suspects are the two males who had been seen running toward Woodland Avenue after the shooting.

"The presence of privately owned surveillance cameras and the availability of the footage made the arrests of the suspects and the seizure of the firearm in this case possible," Liu said.

"What is especially troubling is that these suspects showed no remorse after being taken into custody. It's especially troubling considering their young ages and their total disregard for life," Liu said by phone.

Police are still actively seeking witnesses who might know about or have witnessed the shooting or the events before and after the homicide. Anyone with information is asked to call acting Cmdr. Angel Sanchez at 650-853-3154. Anonymous tips can also be emailed to epa@tipnow.org or texted or left via voicemail at 650-409-6792.

—Sue Dremann