CHICAGO — The family a Minnesota man who died when an Ethiopian Airlines plane crashed last month has filed a wrongful death lawsuit against Boeing, the manufacturer of the 737 Max aircraft that was involved in the crash and is now being investigated by U.S. prosecutors.

The suit was filed Monday in federal court in Chicago, where Boeing is based, on behalf of the family of Mucaad Hussein Abdalla, of St. Cloud. The lawsuit is the latest complaint in a growing number of claims against Boeing following two 737 Max crashes within six months.

“We miss him dearly,” said Abdalla’s brother, Hassan Abdi. “He had a long life ahead of him and he was taken away from us too soon.”

The suit alleges that Boeing knew or had reason to suspect a malfunction of a new automated anti-stall system known as MCAS. The complaint says the company “actively concealed” the nature of the defects.

Nomaan Husain, one of two Houston lawyers representing Abdalla’s family, said the goal of the lawsuit is to obtain answers for his clients and “hold those accountable” for the crash that killed 157 people.