Pakistan denies attack on India-administered Kashmir after explosions reported in Jammu city – as it happened

This live blog is now closed. You can read our latest reporting on the Kashmir crisis here:

• India claims to have thwarted Pakistan missile and drone strikes
• There will be war': fear and defiance across border

The Pakistan Aviation Authority has announced that operations at Karachi airport will be suspended until midnight, Reuters reports. It has just gone past 6pm in Karachi.

Reuters is also carrying comments from India's foreign secretary, who has said that any further escalation would be escalation by Pakistan, and would be responded to. Pakistan would, he said, be responsible for the consequences if India infrastructure was targeted.