WESLACO – Amid two Texas mass shootings investigations, a new state law prohibits school districts from regulating those who take guns to school.

The new law applies to public schools or open-enrollment charter schools in Texas.

An attorney representing around 20 Rio Grande Valley school districts says now it’s legal for any person who holds a license to carry to transport or store any firearm or ammunition inside a locked car on school grounds.

Once a firearm is visible in a school building, it becomes a criminal offense.

Watch the video above for the full report.