Two male teachers of a popular school in Welimada Central Sri Lanka were caught red-handed while smoking cannabis during work hours, police said on Thursday.
They said the pair was arrested in the empty music classroom of the school along with 1.9 grams of locally grown cannabis, police said.
They were arrested following an anonymous tip-off to the local police.
The two were to be produced before a local Magistrate later on Thursday, police said.
Locally cultivated cannabis also known as ganja in the island-nation is widely used mainly by youth and there have been calls to even to legitimize the narcotic from across the political divide.
Controversial Government Member of Parliament Diana Gamage has repeatedly called for legalizing of the drug and even urged that it be exported in order to gain the much needed foreign exchange for the cash-strapped country.
The drug is also used as a medicinal cure by native doctors on the island-nation.
It is grown in the wild mainly in the southern parts of the country and hard to detect owing to the thick and harsh forest cover in these areas.