sulfuric acid

In a recent article I read, A man in Texas is suspect to burning his own four kids with acid. Police said they saw the acid rupture in his pick up truck and thats when he left the children at the cafe and fled. He finally turned himself in and said he would never throw acid at anyone. Also said he ran because he was scared. The childrens ages are 4,7,14, and 18. Police say its unclear what he was doing with acid in the truck. All four children are being treated at a hospital but the 7 year old seems to be in the worst shape.