The other victims were shot when one of the rival groups, leaving the party in a car, started firing down the street, the police said.
But they lost out when a rival group, given a second chance to bid, offered $461 million.
The situation at the mine was quiet Friday ahead of peace talks between the rival groups, he said.
American leaders had been concerned that the rival sectarian groups would not find a common cause.
The court heard that two rival groups of men had been taunting each other in the area.
The rival groups held talks but could not reach a deal for a cooperative effort.
He was a student at neither of the two schools that the police said were home bases for the rival groups.
The two rival groups would not easily pick up one another's function, no matter what they'd been threatened with.
Also in the fray are two rival groups of businesses.
The fighting was between two rival political groups and took most of the planet by surprise.