UK terror threat level raised to ‘critical,’ another attack may be imminent

British Prime Minister Theresa May addresses Manchester attack.

British Prime Minister Theresa May announced Tuesday the country’s terror threat level has been raised to its highest level, “critical.”

This comes in the wake of the deadly attack at a Manchester Ariana Grande concert, signifying that another attack may be imminent, according to Fox News.

This is a developing story. Updates to come.