LAHORE (Monitoring Desk) – As many as 19 people were killed and another 59 injured after explosion rocked Ariana Grande’s concert in Manchester Monday evening. British Prime Minister Theresa May condemned the attack and said the police are treating it as a terrorist attack. Reports also suggested that ISIS has claimed responsibility of the attack. The investigating authorities suspect the explosion was either suicidal or might have been planted in a backpack. The explosion took place just as the American star Grande was wrapping up the concert. She left the arena unhurt. This is a developing story and will be updated as details become available