Singaporean authorities will step up inspections at air, land and sea checkpoints to prevent e-cigarettes from entering the city-state, the South China Morning Post reported.
"Arriving passengers may be screened for electronic vaporizers and their components at the arrivals hall and those found with electronic vaporizers or their components will be fined," the Department of Health and Health Sciences Authority said in a media release.
Smoking e-cigarettes is illegal in Singapore, and violators can be fined up to S$2,000 ($1,490). Those who import, distribute or sell such products face stiffer penalties, including possible jail time.
Despite the ban, the number of people caught using and possessing e-cigarettes has been rising, including underage consumers.
In addition to border checkpoints, inspections will also be stepped up in central business districts, shopping malls, parks, smoking areas, and public entertainment venues such as bars and clubs.
Since December 1, enforcement officers from the National Environment Agency have been empowered to take action against people who use or possess e-cigarettes.
Singaporean authorities said they adopted a multi-agency approach to protect people.
The World Health Organization said last week that urgent action is needed to control e-cigarettes to protect children and non-smokers.