Delhi CM Arvind Kejriwal was heckled by BJP workers on Thursday as he started to speak at an official event in New Delhi. The interruption prompted two Union ministers to intervene.

In a programme organised jointly by the National Mission for Clean Ganga and the Delhi Jal Board to launch projects to clean the Yamuna River at Delhi’s Vigyan Bhawan, some BJP workers imitated coughing action to ridicule the Delhi CM, news agency PTI reported.

Kejriwal was known to suffer from chronic coughing during the winters and also underwent surgery to address the problem in September 2016.

As he began his speech, the BJP workers started mocking him by repeated coughing. The action by the BJP workers  left the AAP leader in an awkward position at the Vigyan Bhawan event as he asked for some silence from the audience.

The event was also being attended by Union Water Resources Minister Nitin Gadkari and Environment Minister Harsh Vardhan.

As the heckling became louder, Vardhan and Gadkari asked the workers to stop. Please keep quiet. This is an official event," Gadkari said.

Deputy Chief Minister Manish Sisodia, Minister of State for Water Resources Satyapal Singh, and BJP MPs from Delhi and workers were also present.