Turkey has in the past faced criticism for corruption, but the government claims it is committed to stamping it out.
Attila Yesilada, political analyst at Istanbul-based research firm Global Source Partners, says their studies indicate international investors are also facing the menace of corruption.
Transparency International, Eastern Europe and Central Asia region
"More than half of foreign businesses in Turkey complain about bureaucracy, red tape, corruption, bribery and influence-peddling, all varieties (of) things that really distort the business environment. AKP has made tremendous efforts to reduce the problem, but it's not going away," he said.
The AK Party prides itself as pro-business and says it is committed to rooting out corruption. Earlier this year, the United Nations awarded Turkey a public service award in the field of anti-corruption. Police have carried out a series of anti-corruption raids against local municipalities. But critics point out the raids were only against those municipalities controlled by opposition parties.
Analyst Yesilada says many of the government actions have only resulted in a change of who benefits from corruption, rather than eliminating it. He says the key problem is the centralization of power in Turkey.
Transparency Corruption Index 2012
"I think most importantly as long as we have a mentality where the state and the bureaucrats are in a position to hand out licenses and have the ultimate decision on who owns what and who runs what in this economy, this situation will not change," he said.
In reforms introduced by the previous government in 2001, in cooperation with the World Bank, a series of independent regulatory bodies were created to investigate corrupt practices, especially within the state. But in 2010, the government put the regulators under state control.
The AK party disputes criticism of its record, pointing out that under its decade-long rule, Turkey has enjoyed unparalleled economic success.