Two days after suspected militants lobbed a grenade in city center of Srinagar on other side authorities beefed up Security across the city on Monday.Since early morning large contigent of police and paramilatry forces were seen stopping bikers, private vehicles and checking them. Authorities has taken this step as precautionary measures. Mostly link roads were seen in frisking mode. Kashmir valley is going for 2nd phase of elections on Tuesday in North Kashmir's Kupwara and South Kashmir's Kulgam districts. Security in these two districts has also been geared up. Meanwhile Army Chief also reviews security arrangments in Kupwara on Monday ahead of polls.