Two children died Sunday evening after a one vehicle rollover on the Southwest Side.

The accident happened just before 6 p.m. on Southwest Loop 410 and Old Pearsall Road.

According to San Antonio police, a witness saw a man and a woman in an SUV weaving in and out of lanes and arguing minutes before the SUV rolled over.

Police said a total of six people were in the vehicle at the time, three adults and three children.

The two children who died were a boy and a girl between the ages of 7 to 10 years old.

The other four passengers were taken to the hospital. Their conditions were not released.

Police said none of the six people in the SUV were wearing seat belts. Police are investigating whether or not alcohol was a factor in the accident.