Also on Monday, the Turkish state news agency Anadolu reported the arrest of 12 people in Ankara as part of an investigation into suspected jihadists.
"Both the intelligence service and security forces have taken extra measures, and important results have been achieved", he said, without elaborating.
Turkey police force has detained 12 suspected Islamic State extremists amid ongoing crackdown and closure of USA embassy.
The U.S. embassy was closed on Monday due to an unspecified security threat.
Visa interviews and other routine services would be canceled on Monday, the embassy said, adding that it would make an announcement when it was ready to reopen.
Their competing policies in war-ridden Syria such as Washington's continued aid for Kurdish forces fighting IS, and Ankara's ongoing invasion of the besieged enclave of Afrin in Syrian Kurdistan as well as the Turkish leadership's realignment with Russian Federation has added to the strained relations.
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The South China Sea is off the coast of Vietnam, and that body of water sees $5 trillion in cargo pass through each year. Defense Secretary James Mattis and followed months of backroom military diplomacy between Hanoi and the Pentagon.
The chief prosecutor declared that police captured the suspects, whom all foreigners, during a mission but he didn't give any further information about their nationalities.
While relations between the United States and Turkey - both North Atlantic Treaty Organisation allies and members of the coalition against Islamic State - have been strained in recent months, Turkey said the embassy closure was not political.
In addition to media reports of the 20 suspected ISIS members rounded up, the Turkish Interior Ministry announced Monday that 20 "terrorists" were "neutralized" in 1,079 counterterrorism operations conducted in the past week, from February 26 to March 5. Two others were detained in Samsun.
The last attack which IS claimed was just 17 minutes into 2017 when a gunman killed 39 people at the elite Istanbul nightclub Reina during New Year's celebrations. Close to 2,000 of them were "foreign terrorist fighters", the minister said.