Jammu/Srinagar, May 11 -- Within hours of India, Pakistan agreeing to a ceasefire on Saturday, Jammu and Kashmir was shaken by a series of explosions and drone sightings, prompting security personnel to engage air defence systems to bring them down. The episodes in Kashmir as well as Jammu province evoked severe concerns of possible violation by Pakistan of the freshly announced truce, officials said. Pakistan resorted to heavy firing along the Line of Control at Keri Battal, Jogwan, Khour in Akhnoor sector. Ceasefire violations were also reported in Sunderbani, Nowshera (both Rajouri) and Mendhar in Poonch, said officials. Reports of drone attack in Udhampur also surfaced. "Sirens were blaring in the area as we could see drones being intercepted by air defence system. There is a blackout in the town," said a local Rakesh Kumar. Air sirens wailed through parts of Jammu city followed by explosions, resulting in temporary power cuts in some areas. In Srinagar, citizens reported several blasts after dusk, with air defence forces engaging a drone flying over the Batwara neighborhood, close to a strategic army facility. Officials confirmed that the drone was downed. The blasts, which came about every 15 minutes and were preceded by flares illuminating the dark sky, caused instantaneous alarm and confusion. Drone activity was reported across the Kashmir valley and subsequently destroyed by an anti-drone system over Baramulla town in north Kashmir around 8.20 pm. Another drone was reportedly brought down at Anantnag high ground, also in close proximity to an army installation. Sightings of drones were also reported in Bandipora, An armyman was injured in a brief exchange of fire with a suspected terrorist outside the Nagrota military station here on Saturday, an official said, as a massive search operation is on to secure the area. "On noticing suspicious movement, alert sentry at the Nagrota military station issued a challenge, leading to a brief exchange of fire with the suspect. Sentry sustained a minor injury," the Jammu-based White Knight Corps posted on X....