A 13-year-old and a four-year-old died in shooting as police say all parties involved have been detained

Two children were killed and two more were critically injured in a shooting early on Saturday near the Houston suburb of Angleton, Texas, authorities said.

The Brazoria county sheriff’s office said in a Facebook post that deputies responded to reports of the shooting and found two children, ages 13 and four, fatally shot. Two other children, aged eight and nine, were flown by medical helicopter to a hospital and were in critical condition.

“Fortunately, the two injured children are now in stable condition,” Madison Polston, the sheriff’s public affairs officer, said in an email Saturday.

A woman has been arrested in connection with the shooting, Polston said. Investigators were working to verify how the woman and children are related.