Police in Kent were called to reports of criminal damage at a mosque in Canterbury Street, Gillingham, at 8.40pm.
A spokesman said a man is in custody on suspicion of racially-aggravated criminal damage.
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Punches began to fly between Reading and Espanyol footballers in the particularly 'unfriendly' friendly.
Monday afternoon's weather for the east of the region
Monday afternoon's weather for the west of the region