A day after Indian Air Force carried out strikes across the LoC, Pakistani jets were reported to cross the Indian air space in Kashmir's Nowshersa. 

Source: Daily Pioneer/Image for Representation

According to India Today, the jets from Pakistan violated LoC in the morning today, and counter action had to be undertaken to stop them from proceeding further. 

Source: The Diplomat/Image for Representation

As per the same report, PTI quoted an official as saying:

The jets entered into Indian air space over Nowshera sector this morning.
Source: Samaa TV/Image for Representation

India's air strike yesterday was in reaction to Pulwama attack that claimed life of more than 40 soldiers and was claimed by Jaish-e-Mohammed.