At least nine people were killed and dozens injured in a car bomb blast at a police academy in Colombia's capital, Bogotá, on Thursday morning, according to officials.
They called it a terrorist act. No group immediately claimed responsibility, but the attack stoked anxiety about a return to the decades when innocent Colombians got caught up in conflicts with rebel groups and drug cartels.
Chaos pierced the calm Thursday when a man drove up to the gates of the Escuela General Santander around 9:30 a.m., according to local news reports. He accelerated, crashing into a wall. Then the explosion went off.
Videos on social media show stretcher-carrying officers hustling the wounded past a blackened shell of a vehicle. The windows of area buildings are blown out and debris lines the street.
Chief Prosecutor Néstor Martínez said the motorist's name was José Aldemar Rojas, according to the Associated Press. He was driving a 1993 Nissan pickup loaded with 175 pounds of pentolite, a highly explosive material.
Colombia's Health Ministry said 35 people were wounded in the blast. Other sources put the number at 54.
Those hurt and killed were "unarmed students," according to Bogotá Mayor Enrique Peñalosa.
Citing an emergency, city officials appealed to the public to donate blood to victims of the explosion.
After news of the attack emerged, President Iván Duque vowed to bring the perpetrators to justice. "This insane terrorist act will not go unpunished," Duque said. "We Colombians have never submitted to terrorism; we have always defeated it."
The U.S. Embassy condemned the attack and affirmed its solidarity with the people and police of Colombia.
The mayor sought to calm fears, saying city residents "can rest easy. ... There is no indication of another terrorist attack."
Thursday's explosion derailed a tenuous feeling of peace the city has enjoyed in recent years.
"This brings back terrible memories of passing by cars left alone and wondering if there was a car bomb," Arlene B. Tickner, a political scientist at the city's Del Rosario University, told The New York Times.
"Over recent decades, there were many bombings in Colombia because of the conflict between the government and leftist guerrilla groups and drug cartels," reports NPR's Philip Reeves. "These tapered off after the largest rebel group FARC signed a peace agreement in 2016. But peace negotiations are stalled with one insurgent organization, the National Liberation Army, and it continues to carry out occasional attacks."
Last year, the National Liberation Army killed five police officers and wounded more than 40 others after bombing a police station in the northern city of Barranquilla. That attack served to derail peace talks between then-President Juan Manuel Santos and the leftist group.
Duque, who took office in August, has rejected resuming peace talks with the group.
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