PRAGUE—A rare tornado believed to be the most devastating in the Czech Republic’s modern history has torn through the country’s southeast, killing at least five people and injuring hundreds, rescue services and police said on Friday. The tornado touched down late Thursday as strong thunderstorms hit the entire country. Seven towns and villages sustained heavy damage that included buildings turned to rubble and overturned cars. The storms were accompanied by hail which in some cases was as big as tennis balls. Hrusky Deputy Mayor Marek Babisz told Czech public radio that half of his town was almost completely wiped out. “The church is without the tower, the elementary school has no roof and insulation any more, only walls remain from what were houses. … It’s really terrible.” Some 360 extra police officers were dispatched to the area, along with army personnel. Rescue crews from across the country, joined by counterparts …