LONDON, Feb 20 (Reuters) - Fremantle, RTL Group's global film and television content production business, said on Tuesday it had agreed to buy Paris-based Asacha Media Group from Oaktree Capital management for more than 200 million euros ($216 million).

Asacha owns majority stakes in eight production companies in France, Italy and the UK, including Red Planet, the maker of police detective drama "Death in Paradise".

Under the deal, Fremantle has the option to acquire the outstanding stakes in the production companies over the next years, RTL Group said. ($1 = 0.9252 euros) (Reporting by Paul Sandle; editing by David Milliken)