If you are concerned whether your loved one is safe following yesterday’s explosion at Ariana Grande’s concert in Manchester then our guide may be able to help you.

At least 22 people -including children- were killed after a suicide bomber denoted explosives at US singer’s show at the Manchester Arena.

The blast also injured at least 59 others following the performance on Monday, May 22.

It comes two months after terrorist Khalid Masood killed five people outside the Palace of Westminster before he was shot dead by officers.

If you are concerned for the safety of any loved ones who live in Manchester, or who may have attended the concert our guide may help you.

Greater Manchester Police is putting out statements regularly via their website and Twitter profile.

How do I mark myself safe following a terrorist attack?

If you receive a notification from Facebook asking whether you are out of harm’s way, click I’m safe.

How do I check whether someone I know is safe?

On Facebook follow these instructions:

• Search for Safety Check

• Once there you will be able to see a list of friends marked safe and a list of people who are not yet marked as safe

• You can also search for your friend using their name and click ask if safe next to their name

I’m still worried about my family and friends is there a number I can reach to see if they are OK?

Greater Manchester Police is set to launch a Casualty Bureau, which you can reach to find out about your loved one.

Once the number has been published we will include it here.