NORTH MANKATO (TEC News) - Investigations continue in the assault of a North Mankato man. 18-year-old Mackenzie Ray Tiegs was arrested without incident yesterday when he stabbed a male victim during an altercation. North Mankato Police Chief, Chris Boyer says that they are still questioning both parties involved. Boyer said the victim walked from the duplex they were staying in to the NMPD lobby. Gold Cross Ambulance was called to transport the victim to Mayo Clinic Health Systems-Mankato. He is currently listed in serious condition.