Two British journalists working for Iranian-owned Press TV have been arrested in Libya.
Reporter Nicholas Davies and cameraman Gareth Montgomery-Johnson were detained by members of the Misrata Brigade on Tuesday and are being held in capital Tripoli.
Mr Montgomery-Johnson's sister Melanie Gribble said she had no idea why her brother, from Carmarthen, was arrested and she was "concerned for his welfare".
The UK Foreign Office confirmed that two British nationals have been detained.
Press TV released a statement saying both were seized along with two Libyan nationals and it hasn't been in contact with the four since Tuesday.