16 July 2012 Last updated at 08:22 ET

Norwich Castle rhino horn theft bid: Second man arrested

The attempted theft on 20 February took place during museum opening hours

A second man has been arrested in connection with a failed attempt to steal a £240,000 rhino horn from Norwich Castle Museum in February.

The 21-year-old from Newham, east London, was detained over the weekend and released on bail until September.

Nihad Mahmod, 19, of no fixed address, has already been jailed for two-and-a-half years for his part in the attempt to steal the horn.

The museum has since replaced the rhino horn with a replica.

On the black market, rhino horns can sell for about £50,000 per-kg, making them as valuable or more valuable than gold or cocaine.