A high school student returning to her Palo Alto home about 3 p.m. today interrupted a burglar who ran out the back of the house.
Police attempted to cordon off the area in the 800 block of Ames Avenue, but the burglar got away, Police Agent Dan Ryan said.
"We tried to surround the block," Ryan said. A Sunnyvale police K-9 unit was brought in to assist with a search for more than an hour, but the burglar was not found.
Ryan said he didn't know if any items were stolen from the house, but the burglar had a bag of valuables he left inside the home.
There have been rash of home burglaries since Jan. 1 and police released an advisory last week for residents to make sure their doors and windows are locked and to be vigilant about suspicious activity.