PALO ALTO — A toddler was injured last week when a roving security robot at Stanford Shopping Center reportedly knocked him over and ran over his foot, ABC7 News reported.

The robot, which stands 5 feet tall and weighs 300 pounds, was introduced last year and is designed to alert authorities of abnormal noises, sudden environmental changes and known criminals.

The incident involving 16-month-old Harwin Cheng happened Thursday, according to ABC7 News.

“The robot hit my son’s head and he fell down facing down on the floor and the robot did not stop and it kept moving forward,” Harwin’s mother, Tiffany Teng, told the station.

The robot then ran over the toddler’s right foot, causing it to swell, but no bones were broken, ABC7 News reported. The toddler also suffered a scrape on his leg from the incident.

Knightscope, the Mountain View-based maker of the robot, did not immediately respond to a request for comment.

Contact Jason Green at 408-920-5006. Follow him at Twitter.com/JGreenMercNews.