At least 16 people were killed and dozens others injured after being struck by lightning in the past two days in southern Rwanda, an official said on Saturday.Lighting hit 45 people who were praying on Saturday, leaving 14 of them dead, XInhua quoted Nyaruguru district mayor Francois Habitegeko as saying.Some of the injured remain in critical condition, he said.Two other people, including a primary school pupil, died early on Friday after being struck by lightning, he added.Sixteen others were injured in the lightning strike on Friday, the mayor said.