UVALDE, (United States): A teenage gunman killed at least 19 young children and two teachers at an elementary school in Texas on Tuesday, prompting a furious President Joe Biden to denounce the US gun lobby and vow to end the nation’s cycle of mass shootings.

The attack in Uvalde — a small community about an hour from the Mexican border — was the deadliest US school shooting in years, and the latest in a spree of bloody gun violence across America.

“It’s time to turn this pain into action for every parent, for every citizen of this country,” Biden said, his voice heavy with emotion.

“It’s time for those who obstruct or delay or block common-sense gun laws — we need to let you know that we will not forget,” he said.

Texas Governor Greg Abbott named the suspect as Salvador Ramos, an 18-year-old local resident and a US citizen.

Texas Department of Public Safety (DPS) officials told CNN the gunman was believed to have shot his grandmother before heading to Robb Elementary School around noon where he abandoned his vehicle and entered with a handgun and a rifle, wearing body armor.