A teenager riding his bicycle in Mountain View on Monday night was seriously injured when an assailant struck him in the head, police said Tuesday.
Police said the victim, a 17-year-old from Mountain View, was riding his bike with a friend in the 2000 block of Latham Street around 8:40 p.m. when an unidentified male emerged from a hidden location and hit him in the head with an object.
The attacker then fled, running toward Rengstorff Avenue, and remains at large.
The victim was taken to a hospital to be treated for a serious head injury, police said.
Anyone with information about this case is asked to call Mountain View police at 650-903-6344.