(PARIS) — An attacker armed with a knife killed three people at a church Thursday in the Mediterranean city of Nice, authorities said. It was the third attack in two months in France. The assailant was wounded by police and hospitalized after the killings at the Notre Dame Church, less than a kilometer (half-mile) from the site in 2016 where another attacker plowed a truck into a Bastille Day crowd, killing dozens. Thursday’s attacker was believed to be acting alone and police are not searching for other assailants, said two police officials, who were not authorized to be publicly named. France’s anti-terrorism prosecutor’s office opened an investigation into the killings, which marked the third attack since the opening in September of a terrorism trial in the January 2015 killings at the satirical newspaper Charlie Hebdo and a kosher supermarket. “He cried ‘Allah Akbar!’ over and over, even after he was injured,” said Nice Mayor Christian Estrosi, who told BFM television that three people had died, two inside the church and a third who fled but was mortally wounded.