The Government has begun legal action against ITN after it caused a potential security breach at a prison.
The Home Office has issued proceedings after pictures showing a key and a lock were broadcast last summer from Feltham Young Offenders' Institution in west London.
All media sign a contract when entering a jail which specifies that images of locks or keys must not be published. Expert locksmiths can make duplicate keys from a close-up shot.
All locks at the jail had to be changed after the
pictures were broadcast in a documentary about an inquiry into the
murder of Asian teenager Zahid Mubarek
It is understood ministers are seeking £250,000 compensation from ITN plus legal costs.
A Home Office spokeswoman said: "We can confirm the Home Office has
taken out legal proceedings against ITN to recover costs for the relock
at Feltham young offenders institution in June 2006."
An ITN spokeswoman said: "The matter is ongoing and we don't think it's appropriate to comment any further at this stage."