Play park arson attack 'sickening', says mother / Police given more time to question suspect over 'arson attacks' on properties linked to PM / Starmer says suspected arson attacks on properties linked to him are 'attack on democracy' / UK police hold Starmer arson attack suspect for extra 36 hours / Ukrainians charged over arson attack at Warsaw shopping centre on behalf of Russia / Man arrested over arson attacks after fire at Keir Starmer's house / Car damaged in suspected arson attack used to belong to British PM / Terror police probe foreign state actor link to arson attacks on PM Sir Keir Starmer / Arrest over suspected arson on properties linked to Keir Starmer / Man, 21, arrested over arson attacks after fire at Keir Starmer's home