Several people were injured when two attackers reportedly an threw an explosive device into the Bora Bora nightclub, Caucasia, in the early hours of Friday morning.

Others were injured in the stampede that ensued, according to the Caracol radio station. Several people are thought to have suffered serious injuries.

The two suspected attackers, a man and a woman, have been detained according to the mayor Oscar Anibal Suarez, who spoke to RCN Radio.

He confirmed 31 people were injured, three seriously, according to AP.

Colonel Carlos Sierra Nino, commander of the Antioquia police force, said two people approached the nightclub on a motorbike before an explosive was thrown at the building.