UVALDE, Texas (AP) — An 18-year-old gunman opened fire Tuesday at a Texas elementary school, killing at least 19 children as he went from classroom to classroom, officials said, in the latest gruesome moment for a country scarred by a string of massacres. The attacker was killed by law enforcement.

The death toll also included two adults, authorities said. Gov.

Greg Abbott said one of the two was a teacher.

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The assault at Robb Elementary School in the heavily Latino town of Uvalde was the deadliest shooting at a U.S. grade school since a gunman killed 20 children and six adults at Sandy Hook Elementary in Newtown, Connecticut, almost a decade ago.

“My heart is broken today,” said Hal Harrell, the school district superintendent, announcing that all school activities were canceled until further notice.

“We’re a small community, and we’re going to need your prayers to get through this.”

The attack also came just 10 days after a deadly, racist rampage at a Buffalo, New York, supermarket that added to a yearslong series of mass killings at churches, schools and stores.

And the prospects for any reform of the nation’s gun regulations seemed as dim as in the aftermath of the Sandy Hook deaths.(AP)