A burglary early Sunday morning at The Graduate apartment complex is "not connected whatsoever" to a home invasion five days earlier at Beaver Hill apartments, State College Police Sgt. Chris Fishel said yesterday.

Still, in light of the recent incidents, the State College Police Department warned local residents to be aware and take safety precautions.

"We want people to lock their doors at night, even when they're in there sleeping, and be cautious with who they open the door to," Sgt. Keith Robb said.

Robb said the fact that the mode of operation was different for both incidents is one of the reasons police feel the incidents were committed by different people.

"They're separate incidents," Robb said, noting several distinctions between the two home invasions. Robb said the first invasion occurred during the day and the other happened at night, and one was an armed robbery while the other was a burglary. Robb also said the suspects did not meet the same descriptions in both incidents.

In Sunday's burglary, police said a woman who was visiting the area was awoken in an apartment at about 4 a.m. at The Graduate, 138 S. Atherton St., by five unknown black men. The men had entered her apartment through the unlocked front door and were taking computers and other items, police said.

The suspects stole two Dell Inspiron laptop computers, a Sony PlayStation, an X-Box, an iPod speaker-docking base, a computer monitor, DVDs and video games, police said.

In the robbery Wednesday, police said and unknown white man knocked on the door of a Beaver Hill apartment, 340 E. Beaver Ave., and asked for the resident's roommate, at which point he gained entry, followed by two black suspects, and produced a four-inch pocketknife.

The suspects ransacked the bedroom and stole a Dell laptop computer, a cell phone and an undisclosed amount of cash, police said.

"At this point we have no reason to believe they're related, but that could change," Robb said.

While Robb named three other apartment robberies that have occurred since the beginning of the year, he said the two incidents last week were the only ones in which witnesses were present to see the crimes in progress.

Robb said there was no indication that either Wednesday or Sunday's home invasions were drug-related and said this was the first time either of the residents had been victimized.

The incidents are being investigated separately and police said they have no names of possible suspects.

Composite sketches of the suspects have yet to be completed for either incident, but police said they are hoping to get a tip from the public. Police are asking anyone with information to contact police at 234-7150.