A bomb targeting a hardline former interior minister killed two of his bodyguards and injured at least 39 people in Bogota's uptown commercial district Tuesday in the type of brazen attack not seen in Colombia's capital in years.

The former minister and morning radio host, Fernando Londono, suffered minor wounds and was out of danger after being operated on to remove glass shards from his chest, authorities said. Video footage showed a stunned Londono, his face bruised, being led from the wreckage in a dark suit and red tie.

Bogota Mayor Gustavo Petro said a pedestrian attached an explosive to a door of Londono's armored SUV and set it off remotely. He said authorities had video of the attack.

The attacker "walked away disguised" and a wig of long black hair and a hat were found in the area, Petro told reporters.

It was the first fatal bombing in the capital in nearly a decade of an apparently political nature and it traumatized a capital that two decades before had been ravaged by car bombs set by drug traffickers fighting extradition to the United States.