SOUTH SALT LAKE POLICE HAVE ARRESTED THREE MEN, IN WHAT THEY'RE CALLING THE GANG-RELATED MURDER -- OF A MAN IN HIS TRUCK -- LAST MONTH.

POLICE OFFICER GARY KELLER SAYS, TWO 19-YEAR-OLDS WERE ARRESTED -- ALONG WITH A 20-YEAR-OLD -- ALL WITHIN ABOUT 15 HOURS, IN THREE DIFFERENT LOCATIONS.

THE THREE ARE CHARGED IN THE JUNE 23RD SHOOTING OF 40-YEAR-OLD WEST VALLEY CITY RESIDENT FRANCISCO COLON... WHO WAS FOUND -- DEAD INSIDE HIS TRUCK -- STOPPED IN THE MIDDLE OF A SOUTH SALT LAKE STREET.

HIS 17-YEAR-OLD PASSENGER WAS ALSO WOUNDED.

A MOTIVE -- FOR THE SHOOTING -- HAS NOT YET BEEN DETERMINED.