Dharamshala, Sept. 16 -- As many as 493 roads, including three national highways, remained blocked as rain lashed many parts of the state on Monday. It included 153 roads in Kullu district, followed by 152 in Mandi, 57 in Shimla and 29 in Kangra. The India Meteorological Department's (IMD) Shimla office has sounded a yellow alert of heavy rain in Kangra, Mandi and Sirmaur districts for Tuesday. The weather office has also issued a yellow alert of thunderstorms and lightning in Bilaspur, Shimla and Solan districts. Light to moderate rainfall is very likely at a few places till September 21. In Kangra's Jawali area, four labourers were injured when their temporary shelter collapsed in a landslide during the early hours. htc...