POSTED: 10:42 pm CDT July 5, 2010

UPDATED: 10:51 pm CDT July 5, 2010

LOUISIANA, Mo. -- The search is on for a 4-year-old girl abducted from her front yard.

Officers said the girl was playing with her brother at their Louisiana home on Monday night when a car pulled up and a man grabbed her.

Police said Alisa Maier has brown hair with brown eyes and stands about 3 feet tall and weighs 40 pounds. She was last seen wearing a white T-shirt and blue jean shorts.

Investigators said the kidnapper was a man in his 20s with dark hair and dark skin.

Officers said the vehicle was a black four-door passenger car.

Anyone with information is asked to call Missouri State Police at 573-754-4021 or 911.