Sumter, SC (WLTX) - Sumter police say a mother and her two children remain in critical condition after their car went into a retention pond Thursday night.

The incident happened just after 9:30 p.m. next to the Dillon Trace apartments on North Wise Drive.

The grandmother, who was also in the car, was able to make it out safely. But the mother and her 5-year-old daughter and 2-year-old couldn't.

Rescuers, however, were able to go into the water and get the other three out. They were taken to Palmetto Health Tuomey in Sumter but were moved to Palmetto Health Richland.

Police are investigating the cause of the accident.