The worst outbreak of the virus in history has seen the west African nation and its neighbours Guinea and Sierra Leone register almost 9,000 deaths in a year, although experts believe the real toll could be far higher.
"We have five confirmed Ebola cases in Liberia as of today," assistant health minister Tolbert Nyensuwah told AFP.
He said three of the cases were in the capital Monrovia, while the others were in the northwestern counties of Bomi and Grand Cape Mount.
The announcement has not been verified by World Health Organization (WHO) officials, whose statistics often differ from the tallies of individual countries.
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At the height of the epidemic in August and September, Liberia was reporting more than 300 new cases a week and overwhelmed aid workers were having to turn people away from swamped clinics, often to die in the streets.
But a huge international response has seen hundreds of US healthcare workers and troops flood into the country to train nurses and set up Ebola units, and the country reported just eight new cases last week.
Nyensuwah said the five remaining cases included a woman who died last week and may have been in contact with 25 people in the Paynesville area of Monrovia, all of whom have been placed in quarantine.
The WHO said in its latest update on the epidemic that 8,688 people had died, among a cumulative total of 21,759 cases, since the epidemic broke out in Guinea a year ago.
The agency has recognised significant progress in beating back Ebola but warned yesterday that the crisis was still "extremely alarming".
The government in Freetown lifted quarantine measures imposed at the height of the epidemic yesterday.
The nation of six million had restricted travel for around half its population, sealing off six of its 14 districts and numerous tribal chiefdoms.
President Ernest Bai Koroma pointed to a "steady downward trend" in new cases in recent weeks, adding that "victory is in sight".