One person is dead and a suspected gunman has been been arrested after allegedly hijacking an Atlanta bus and leading police on a chase Tuesday, in the second of two major crimes that rocked the city one after the other, officials said.

Police were just wrapping up a briefing after three people and a gunman were shot at a downtown mall food court when a 911 call of an emergency on a bus came in around 4:30 p.m., Atlanta Police Chief Darin Schierbaum said.

A responding officer confronted the…