Move by Petr Necas follows bribery and spying order charges brought against head of his office
The Czech Republic's prime minister, Petr Necas, centre, announces his resignation.
The Czech prime minister, Petr Necas, has been forced to quit after a fraud and spying scandal involving his closest aide, pitching the European Union member state into a period of uncertainty.
Under the Czech constitution, the whole government will now have to step down, and there is likely to be horse-trading between the governing coalition, the opposition and the president before a replacement is in place.
Necas quit days after prosecutors charged the head of his office, Jana Nagyova, with bribing members of parliament and ordering intelligence agents to spy on people. One of the surveillance targets, according to lawyers involved in the case, was the prime minister's own wife, whom he is divorcing.
Necas has said he knew nothing about the surveillance, but the charges were so toxic that his coalition partners signalled they could no longer support him.
Necas told a news conference that he would officially resign on Monday.