Curfew has been imposed in parts of Jammu city on Friday after mobs attacked some people and burnt vehicles following the terror attack in Pulwama in Jammu and Kashmir in which over 40 security personnel were killed. Over a dozen people have been injured in mobs attacks, sources said. Two army columns have been requisitioned to stage flag march and maintain peace, officials said. The curfew was imposed as authorities feared a communal backlash, they added.