Modified bullets and a fourth captured: this is how the investigation into the attack on Miguel Uribe is progressing.

This Thursday, the Colombian Prosecutor's Office released excerpts from the ballistics report on the weapon used by the hitman who shot presidential candidate Miguel Uribe Turbay 12 days ago. Amid hearings to request preventive measures against three people arrested for the crime, the prosecutor's office indicated that the bullets fired had been modified to be more lethal, with a bronze and brass casing. It also indicated that the 9mm Glock pistol used in the attack was modified to fire in bursts, a modification that, while reducing the power of the shots, was offset by the modifications to the bullets. The objective was to cause immediate death.

In addition to these investigative revelations, this Thursday a fourth person linked to the attack against the opposition senator was arrested in western Bogotá. The Prosecutor's Office alleges that William Fernando González Cruz had held prior meetings with other defendants and points out that several videos show him in a car near El Golfito Park in Modelia, where the attack occurred. This Friday, González will be brought before a judge to legalize his arrest and charge him with several crimes.

Although the organizational structure of the individuals involved has expanded, and authorities have been able to establish a timeline and the role of each individual, they still have no clarity on the mastermind. Within the investigation, the weapon remains key. Although it was quickly determined that the pistol was purchased on August 6, 2020, in Arizona, United States, it is still unknown how it entered Colombia. Attorney General Luz Adriana Camargo has stated that they are trying to establish whether the weapon had been used in other criminal acts. "This is usually evidence that sheds a lot of light on the criminal group that may be behind the attack," Camargo said.

Evidence points to another theory, and that is that the 14-year-old hitman was not the only attacker at the scene. Twelve bullet casings—a container containing the other components of a cartridge—were recovered at the scene, corresponding to at least two different weapons. Six of the casings fit a Glock pistol, like the weapon seized from the attacker. The remaining six belong to a Jericho pistol, which authorities have not been able to trace, as it does not match the weapons assigned to Uribe Turbay's security detail, which were used in the pursuit of the hitman and which managed to wound him in the leg, thus preventing his escape.