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In this task, you are given an article. Your task is to summarize the article in a sentence.

Armed officers were sent to the supermarket in Blackheath, West Midlands, on Saturday and several roads were closed.
A teenager has been charged with making an explosive substance and maliciously causing an explosive substance to endanger life.
The boy has also been charged with possession of a bladed article.
West Midlands Police confirmed the teenager was remanded in custody on Monday.
"No members of the public were hurt during the incident and road closures have now been lifted in the area," police added.
Output:
A 15-year-old boy has been charged after a fire in a Sainsbury's toilets led to the store being evacuated.