Updated

Colombian police say that 15 officers have died when the Black Hawk helicopter they were traveling in crashed in the volatile northwest part of the country.

The police said in a statement that two other uniformed personnel are being treated for serious injuries.

Investigators are rushing to the scene to investigate what led to the crash in a jungled area near the Gulf of Uraba region. The crash site is in an area heavily influenced by Colombia's biggest drug-trafficking organization and leftist rebels, but police said that preliminary data suggest that a mechanical failure is to blame.

The incident follows the death of 11 air force personnel whose airplane crashed last week near the Caribbean coast.