Four men were arrested and charged with first-degree robbery and willful injury after two people were severely injured Friday night, Ames Police Department officials said.

Ames Police Cmdr. Jim Robinson said Austin Hogate, 19, 4912 Mortensen Rd. #411; Patrick McGravey, 19, of Boone; Gregory Wardlow, 20, of West Des Moines and Scorpio Dantzler, 20, of Des Moines, are all charged with two counts of first-degree robbery and two counts of willful injury. Hogate is also charged with operating a motor vehicle while intoxicated.

Robinson said at about 11 p.m. Friday, Tom McDonald was walking on Hayward Avenue when a dark-colored Ford Explorer pulled up beside him. Four men in the car proceeded to ask McDonald for directions, then abruptly exited the vehicle and assaulted him.

They then demanded McDonald’s money and took his cell phone, Robinson said.

McDonald sustained bruises on the side of his face and complained of severe pain from being struck in the head. He received medical treatment at Mary Greeley Medical Center.

Attempts to contact McDonald at home Monday were unsuccessful.

Robinson said after the incident was reported, Ames Police officers located the Ford Explorer on Hunt Street. Traffic was stopped, and the four men were identified as suspects. The suspects were taken to a holding facility at the Ames Police Department and were transferred to the Story County Jail Saturday.

Following the arrests, Robinson said it was discovered the four men had attacked another man earlier that evening.

At around 9 p.m., Andrew Chamberlain, sophomore in community and regional planning, was assaulted by four men on Stanton Avenue.

He sustained a broken jaw from the attack and received medical attention for his injuries.

Under Iowa Code 711.2, first degree robbery is a Class B felony, which is punishable with up to 25 years in prison.

Willful injury is defined under Iowa Code 708.4 as “any person who does an act which is not justified and which is intended to cause serious injury to another.” Willful injury is classified as a Class D felony, which is punishable with up to five years in prison and a $7,500 fine.