The man found the intruder around 10 a.m. at the Stanford West apartments on Clark Way. The man called 911 and the burglar fled, police Agent Dan Ryan said.
The burglar did not take any items from the apartment, but Ryan said another burglary reported in the complex might have been carried out by the same person.
That burglary occurred in another building of the Stanford West apartments on Charles Marx Way sometime between Sunday and Tuesday, according to the resident who reported the crime, Ryan said. A laptop was taken in that case.
Ryan said Stanford West is a Stanford University-owned apartment complex with separate buildings that is mainly occupied by graduate students and university employees.
Police suspect the burglaries were connected because the window was the point of entry in both burglaries and the time frame and locations seem to match up.
Police responded to two additional burglaries Tuesday in what Ryan said are a second set of connected crimes.
A resident in the 3100 block of Louis Road reported a burglary occurred between 9 a.m. and 5 p.m., Ryan said. A large flat-screen television and about $1,200 worth of jewelry were taken from the home.
Also on Tuesday, a resident in the 3100 block of Ramona Street reported a burglary had occurred between 9:45 a.m. and 2:15 p.m. A camera, laptop and about $30,000 worth of jewelry were taken, Ryan said.
The homes are located in the same neighborhood and in both homes burglars entered by prying open a rear door, according to Ryan, who said the two burglaries are likely connected.
No suspects have been arrested in any of the four burglaries, Ryan said.