A Lufthansa flight from Chicago to Germany was forced to land in Boston after a man allegedly stabbed two teenage passengers with a metal fork, Massachusetts authorities said.

Praneeth Kumar Usiripalli, 28, was charged with one count of assault with a dangerous weapon with intent to do bodily harm on Saturday, the U.S. Attorney’s Office in Massachusetts said in a statement.

The plane landed at Logan International Airport, where Usiripalli was arrested. He is set to appear in a Boston court at a later date.

He could face up to 10 years in prison, up to three years of supervised release and a fine of up to $250,000.

According to the charging documents, while on board Lufthansa Flight 431 en route to Frankfurt, Germany, Usiripalli is accused of stabbing a 17-year-old male passenger in

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