Atherton police say that four people were seen taking mail from mailboxes in the North Fair Oaks and Lindenwood neighborhoods on Sunday, July 24, at about 7:30 a.m.
They describe the suspected thieves as a white male, a white female and a black female, all in their 30s. They had no description for the car's driver.
A stolen car matching the description of the car they were seen in, a charcoal-colored Mercedes Benz station wagon, was later found abandoned in Mountain View.
Atherton police warn residents to not leave mail in boxes overnight and to lock car doors. They ask that anyone with information about the mail thefts call the department at 650-688-6500.