"We have increased our alertness in view of the increase in movement and activities across the border. We have noticed movement across the border in the area around Ganganagar district," B R Meghwal said.
The Inspector General stressed that extra troops were deployed at the border and "we are capable to strike back in case of any eventuality."
Four militants reportedly crossed from Pakistan into India-administered northern Kashmir territory early Sunday and attacked the Indian base in Uri, killing 18 servicemen.
Both countries have been laying claims to Kashmir since 1947. The recent escalation started in July after Indian security forces killed Burhan Wani, a renowned separatist commander.