PRISTINA (Reuters) -A man was killed and a woman injured when a falling tree hit them during a storm in Kosovo’s capital Pristina on Monday afternoon, police said. Less than an hour later, another man was killed and his workmate injured when lightning hit them in a marble quarry in the southwestern town of Rahovec, officers added. Police said they were on alert for more damage elsewhere following the fierce gusts and heavy rain. Some schools closed early. “You have to be cautious especially in parts of the city where there are trees,” Pristina’s deputy mayor, Alban Zogaj, wrote on his Facebook…