South Korea tightened security measures over airports and other major facilities Friday after a series of bomb attacks in London.
Police raised terror alert and intensified baggage checks at the Incheon International Airport, the country's biggest gateway, reported South Korean Yonhap News Agency.
In case of any signs of terrorist threats, policy will mobilize armored vehicles and special forces, Yonhap said.
Security at the US Embassy in Seoul and at major railway stations nationwide has also been tightened, with a total of 496 anti-terror police units geared up for emergency.
The National Police Agency deployed armored vehicles, and sent bomb-sniffing dogs into Seoul Station in and near the American Embassy in the downtown area.
Moreover, South Korean Defense Minister Yoon Kwang-ung also instructed military bases at home and abroad to beef up their security measures.
"The South Korean military base in Iraq is on a 24-hour alert, and it has also mapped out measures to counter suicidal air attacks," Yoon was quoted by Yonhap as saying.
South Korean 3,600-strong military unit is the third largest presence of foreign troops in Iraq after the United States and Britain.