Srinagar, Jan. 18 -- At least two traffic personnel were injured Thursday in a grenade attack by militants on a security picket at Zero Bridge in the city, police said. "Militants hurled a grenade at a security forces' picket near Zero Bridge on Rajbagh side. At least two cops were hurt...," a police official said. He said security forces have cordoned off the area and launched a hunt for the attackers. The attack took place less than 100 metres from National Conference headquarters and the local office of the All India Radio....