Tehreek-e-Labbaik Pakistan chief Khadim Hussain Rizvi has passed away in Lahore, sources within his family told Geo News.
According to the sources, Rizvi had caught fever when he was in the party's sit-in in Islamabad and had not recovered from it.
The TLP leader was taken to Lahore's Sheikh Zayed Hospital where he was pronounced dead.
After his death was confirmed by the hospital, his body was transferred to a private hospital, from where it was taken to his residence, Geo News reported.
A large number of TLP supporters have begun gathering at his residence.
Khadim Hussain Rizvi was born on June 22, 1966, and belonged to district Attock.