Counter-terror police are investigating an arson attack in north-west London "due to the similarities" with recent incidents in the area.A man was spotted approaching a row of shops carrying a plastic bag later found to contain three bottles containing "fluid", the Metropolitan Police said.

Counter-terror police are investigating an arson attack in north-west London "due to the similarities" with recent incidents in the area.A man was spotted approaching a row of shops carrying a plastic bag later found to contain three bottles containing "fluid", the Metropolitan Police said.