Mankato (KMKO)-The Mankato Department of Public Safety is asking for assistance in apprehending three males accused of a robbery Saturday morning.  A man told police he was walking to a friend's house when he was assaulted by three men about 3:00 am.  The men took his wallet, but he was able to escape and call police.  The assault took place near the intersection of Broad and Liberty Streets.  One of the assailants is said to be Hispanic, but no other information has been released.  You can make an anonymous tip by calling 387-8780.