WRAPUP 6-World figures deny wrongdoing as 'Panama Papers' reveal offshore wealth
(Adds French financial prosecutors' probe, German finance ministry, Ukraine president quote)
* Leak reveals tax havens of rich and powerful
* 'Biggest blow' to offshore business - investigator
* Russia says allegations part of anti-Putin campaign
* UK's Cameron says family finances a 'private matter'
By Kylie MacLellan and Elida Moreno
LONDON/PANAMA CITY, April 4 (Reuters) - Governments across the world began investigating possible financial wrongdoing by the rich and powerful on Monday after a leak of four decades of documents from a Panamanian law firm that specialised in setting up offshore companies.
The "Panama Papers" revealed financial arrangements of global politicians and public figures including friends of Russian President Vladimir Putin, relatives of the prime ministers of Britain, Iceland and Pakistan, and the president of Ukraine.
While holding money in offshore companies is not illegal, journalists who received the leaked documents said they could provide evidence of wealth hidden for tax evasion, money laundering, sanctions busting, drug deals or other crimes. Continuación...