RABAT, Morocco—A Moroccan judge on Thursday ordered a man suspected of fatally stabbing a French woman and injuring a Belgian visitor to undergo psychiatric evaluation, as authorities in three countries opened probes into the suspect’s possible links to terrorism. A 78-year-old French woman was killed in a knife attack in a market in the southern Moroccan town of Tiznit on Jan. 15, the French interior ministry said in a statement. The suspect, a 31-year-old man, was arrested later that day in the city of Agadir, about 100 kilometers (60 miles) north of Tiznit, police said. Before he was apprehended, police said he struck again, attacking people with a knife in a cafe located on Agadir’s coastal strip, and injuring a Belgian woman. She was taken to a local hospital for multiple stabbing wounds. The suspect has no criminal record, Moroccan police said. They added that last year he allegedly received …