Colombian authorities are investigating whether the explosion that killed eight people on an indigenous reserve in the southwestern province of Valle del Cauca was caused by the mishandling of gunpowder, the defense ministry said Friday.
https://www.hoylosangeles.com/efe-3932900-15257167-20190322-story.html
Let's hope this is all this was and not a malicious act. It says these people were on an 'indigenous reserve', that sounds a bit like a reservation where strangers probably couldn't make into very easily. Sounds like no intentional bombing and that would be good. It sounds like the statements that this was during a protest may be wrong too. This may have happened in a house. See story.