A Palo Alto resident interrupted a burglary in progress on Tuesday night, May 2, when her home security system alerted her that two people had entered her unlocked side yard gate in the University South neighborhood, police said.

The woman told police that she was alone in her home in the 1400 block of Byron Street, about a block away from Middlefield Road, when her security cameras tipped her off to the intruder. She immediately dialed 911 at 9:12 p.m. and simultaneously yelled out "hello" to the suspects, causing them to flee, according to a press release from the Palo Alto Police Department.

When officers arrived, they found the rear sliding glass door was shattered. The woman reported that nothing was missing.

As of Wednesday, police haven't apprehended the reported intruders. They appeared to wear sweatshirts, masks that fully obscured their faces and gloves, police said. Surveillance cameras in the neighborhood showed a four-door sedan, possibly a Dodge Charger, fleeing the scene at the time of the burglary, police added.

Investigators are looking into whether Tuesday night's attempted burglary is connected to a similar incident that occurred on April 21. In that case, a resident in the 1500 block of Dana Avenue reported that someone broke the glass of his rear door while he was at home. When the resident ran downstairs to see what was going on, he heard the sound of someone running away and then a car driving off.

There was also a residential burglary of an unoccupied home reported Wednesday morning, May 3, that occurred the prior night at 8:52 p.m. in the first block of Jordan Place. Preliminary information suggests two people broke in using a window in the rear yard, police said. It isn't known whether anything was taken, police added, and they are investigating whether the case is connected to the other two.

Police are asking anyone with information about the incideints to call the 24-hour dispatch center at 650-329-2413. Anonymous tips can be submitted via email at paloalto@tipnow.org or by calling or texting 650-383-8984.