Two teenage boys have been arrested after two vehicles were set alight in the Fairwater area of Cardiff.
Police officers stopped the pair in a grey Renault car on Cardiff Road in Barry at around 2.30am on Thursday morning.
The pair were tracked down shortly after the alleged arson attacks on Lavender Grove in Fairwater.
Class A drugs, weapons and cash were seized from the vehicle.
Both youths, aged 15 and 18, remain in custody on suspicion of arson and drug offences.
South Wales Police say an investigation is underway.