NEW ROCHELLE, N.Y. (CBSNewYork) -- One child was dead and another was in serious condition after they were struck by a car in New Rochelle on Tuesday.

The incident happened at 4:30 p.m. at 230 Drake Ave., police said.

Sources told CBS2 that a 12-year-old girl had died after being run over by  a vehicle driven by her own mother. A 10-year-old boy was in serious but stable condition.

As CBS2's Lou Young reported, it was a summer errand that turned suddenly dangerous after a mother with a number of children in the car put the car in reverse instead of drive and backed over two children.

A passenger in the car initially told Young that both had been taken to Jacobi Hospital.