Five children were shot in four separate incidents over the weekend in Texas, highlighting a sobering statistic for a state already struggling with gun violence: Texas ranks first in the nation for unintentional shootings involving children.

Authorities said the spate of shootings included a 4-year-old boy who was shot and killed by his 5-year-old brother; a 6-year-old who was shot with a rifle by his adolescent brother; a 3-year-old who was possibly grazed by a bullet, an 8-year-old who sat on a semiautomatic handgun; and a 14-year-old girl who was reportedly being treated for injuries, according to CBS 11.

These shootings evidence a parallel problem of youth gun violence in a state that has already been devastated by several mass shootings in 2019, including one of the nation’s deadliest ever, in El Paso in August.