North Korea has lifted its strict travel restrictions on people entering the isolated country, which was a frantic measure to prevent the deadly Ebola virus from spreading into its territory, a company specializing in tours to the North said Tuesday.

Although no cases of Ebola have been reported in countries near North Korea, the Pyongyang regime had closed its borders to foreign tourists and imposed a strict 21-day quarantine on all people, including diplomats, entering the country, since last October.

North Korea's state-run airline, Air Koryo, told Uri Tours that the North's travel restrictions were lifted as of Monday.

"We have been informed by Air Koryo that North Korea's borders are now open for travel and the 4-month-long Ebola travel ban was lifted as of Monday, March 2," the company said in a statement posted on its website.

"According to Air Koryo, everything is back to normal," it said.

Uri Tours said it is waiting for further confirmation from its partners in Pyongyang as to when its tour programs to North Korea can resume.

North Korea's frantic measures against Ebola appear to highlight concerns that it could pose a direct threat to the regime's survival if the virus crossed into the North, South Korea's spy agency told lawmakers last month.

It is not the first time that North Korea has closed its borders because of a deadly disease. In 2003, the North closed its borders for several months due to the spread of the SARS virus. (Yonhap)