WARSAW, July 29 (Reuters) - Polish Defence Minister Bogdan Klich has resigned after a government report catalogued serious errors by the crew of the military plane that crashed in Russia last year while carrying Poland's president, Prime Minister Donald Tusk said on Friday.

"He offered his resignation yesterday and I accepted it today," Tusk told a news conference after the publication of the long-awaited report.

The crash at Smolensk airport in western Russia on April 10, 2010, killed President Lech Kaczynski, his wife and many top Polish officials and military commanders.

Tusk named Tomasz Siemoniak, a deputy interior minister, as the new head of the defence ministry. Klich's resignation comes less than three months before a parliamentary election that Tusk's centrist Civic Platform (PO) is tipped to win.