Alex Donaldo Aguilar-Vasquez, 28, was last heard from on September 1, 2008, when he phoned his mother from Reynosa, Tamaulipas, saying he planned to cross into the United States and then travel to California to call her again. He never made that follow-up call and has had no confirmed contact with his family since.

He is described as a Hispanic male about 5 feet 3 inches tall, 140 to 150 pounds, with black hair and brown eyes. He may have used the names Fernando Manuel Aguilar Vasquez or Donaldo Aguilar Vasquez. The San Mateo Police Department has investigated but there has been little public information about what happened after his last call.

If anyone knew Alex, saw him around the time of his disappearance, or has information about his movements in 2008, please contact local authorities with any details that could help his family.