A controversy has erupted after People's Democratic Party chief and former Jammu and Kashmir chief minister Mehbooba Mufti was seen holding an inverted national flag during a protest here on Tuesday night.Mehbooba led party leaders and workers at a sit-in outside the PDP office here to protest against the Centre's removal of Jammu and Kashmir's special autonomous status through abrogation of Article 370 and Article 35A in August 2019. During the sit-in, the former chief minister held the national flag and the flag of the erstwhile state of Jammu and Kashmir. However, the national flag was erroneously held upside down, officials said.