A social worker on Monday lodged a complaint against Prime Minister Narendra Modi for allegedly insulting the national flag during International Yoga Day on Sunday.

V. Sundar (38), general secretary of Dalit Sena, Puducherry unit, said he received a picture of Prime Minister Narendra Modi wiping his neck and face with the cloth containing the Tricolour.

Requesting the police to conduct an inquiry, he sought to register a case against Mr. Modi under Prevention of Dishonour to National Flag Act. On receipt of the complaint, police gave him an acknowledgement slip.