Forensic workers carry the body of one of four people killed by an explosion at a house in a residential neighborhood of Bogota, Colombia, Friday, May 10, 2019. Authorities are investigating whether the house was being used for the illegal fabrication of gunpowder Image Credit: AP

Bogota: Four people died and 29 were injured, including 17 children, following an explosion at a factory where gunpowder is handled in Colombia's capital, Bogota, on Friday, authorities said.

"There are four people without vital signs," a fire brigade source told AFP.

The explosion happened at midday in a factory that produces wicks for a local Andean game called tejo or turmeque, in which metal discs are thrown at targets that contain gunpowder and explode on impact.

"The causes of the accident are being investigated," the fire service source said.