A 17-year-old boy from Livermore was arrested in Hayward on Tuesday evening on suspicion of murder in connection with the shooting death of a teen girl found near Las Positas College earlier this month, Livermore police announced on Thursday.
Police continue to investigate the circumstances of the girl's death and no motive has been revealed yet, but investigators did confirm that the suspect and victim knew each other. Neither the suspect nor the victim have been identified publicly to date.
A Livermore woman related to the teen boy was also taken into custody this week, arrested on Wednesday on suspicion of being an accessory after the fact in a homicide, according to police.
"To say the Livermore Police Department has worked tirelessly on this investigation would be an understatement," Police Chief Jeramy Young said of the probe into the city's first homicide of 2022. "Livermore Police worked as a team to ensure every step was taken to solve this case and bring justice to the victim's family. We also want to thank our partners in law enforcement for their assistance."
The investigation began on the night of April 15 when Livermore police responded to the area of Collier Canyon Road and Meritage Common, just north of Interstate 580 and across the street from the community college, after a caller reported seeing a girl unconscious and visibly injured inside a vehicle, police said.
The girl, a 15-year-old from Richmond, was pronounced dead at the scene shortly after police and paramedics arrived just after 8 p.m. Police said they are withholding her name from being released because the investigation is still ongoing.
Detectives would soon hone in on a prime suspect, and he was arrested without incident at the Super 8 Motel on Foothill Boulevard in Hayward around 6 p.m. Tuesday, according to authorities. Hayward police assisted Livermore investigators in making the arrest.
"The suspect and the victim of the murder knew each other," police said Thursday. "The circumstances surrounding her death as well as a motive are also still under investigation."
The teen suspect was booked into Alameda County Juvenile Hall on suspicion of murder, and the case has been turned over to the Alameda County District Attorney's Office, Livermore police said. They did not release the arrestee's name because he is under 18 years old.
Police did reveal that a family member of the suspect stands accused of helping the boy avoid arrest in the case.
Tomika Cremer, 44, of Livermore was arrested without incident during a traffic stop on North Canyons Parkway at Collier Canyon Road at about 7 p.m. Wednesday, police said.
"Cremer is related to the suspect. She was arrested for being an accessory after the fact. During the investigation, it was determined Cremer helped the suspect avoid arrest knowing he was wanted for murder," police said.
The investigation into the homicide is ongoing. Police said anyone with information about the case can contact the Livermore Police Department anonymous tip line at 925-371-4790.