The official today said three Army personnel who were injured in the exchange of fire were admitted to a hospital and their condition was stated to be stableÂÂ. Twenty people -- 11 security personnel and nine civilians -- were killed and over 75 others injured in Pakistani shelling along the LoC and the International Border (IB) in Jammu division since the beginning of this year. Meanwhile, a junior commissioned officer (JCO) was injured in an accidental mine blast in a forward area in Mankote sub sector in the district yesterday. The officer accidentally stepped over a landmine, which was washed away, causing an explosion, the official said requesting anonymity.