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UVALDE, Texas (WGHP) — Heavily-armed police are investigating at an elementary school in Uvalde, Texas, after a shooting left more than a dozen children dead.

The death toll reached 21, including 18 children and three adults, after a gunman opened fire at Robb Elementary School on Tuesday, according to the Texas Department of Public Safety.

Reporters and photojournalists are working to bring clarity to families all across the country who have their eyes fixed on Uvalde.

Officers are walking the vicinity wearing bulletproof vests with high-powered guns at their sides. EMS personnel stand at the ready if more injured people are discovered. Officers gather equipment at an armed vehicle outside of the school.

Above, you can see a gallery of photos captured by Associated Press photojournalists.