Police stated that nearly Rs. 2.2 million in cash and 60 grams of narcotics were found during the raid carried out at Louis Peiris Mawatha in Kandy.
Due to travel restrictions, the couple had stated at the roadblocks that they would take their 5-year-old child to the hospital as he was seriously ill.
The arrested person is a 29-year-old man and the woman is believed to be his mistress.
It has been revealed that the child is of the woman's first marriage.