Jammu: Voicing concern over incidents of waiving of ISIS flag in Srinagar, BJP today said such actions should be dealt with sternly and the "threat" must not be "undermined".

"We fully share the concerns of GOC of the Army's 15 Corp Lt Gen Subrata Saha that the waving of ISIS flags thrice in Srinagar in recent days is a very serious development," BJP state president and MP Jugal Kishore Sharma told reporters.