(Photo/CGTN)

CHICAGO, June 21 (Xinhua) -- The FBI said Wednesday it was investigating the stabbing of a police officer at an airport in the midwestern U.S. state of Michigan as an "act of terrorism."

The FBI has identified the suspect in the Michigan airport stabbing on Wednesday morning as a Canadian resident, officials said.

The suspect was identified as 50-year-old Amor Ftouhi, who entered the United States on June 16, FBI special investigator David Gelios told a televised press conference in Flint, Michigan.

According to the FBI officer, Ftouhi yelled "Allahu Akbar," or "Allah is the greatest," before he attacked with a 30-centimeter knife against Officer Jeff Neville, at the Bishop International Airport in Flint.

Neville was reported in "satisfactory condition."

At this stage, Gelios believed the incident was a "lone-wolf" attack.