A Rajya Sabha Secretariat official tested positive for Covid-19 on Friday, the fourth such case reported in the Parliament complex so far, sources told PTI here.
Out of the four, three were found to have contracted the infection after Parliament resumed operations on May 3 when Lockdown 2.0 ended and were on duty.
The director-level officer, who attended work on May 28, was found positive for the infection along with his family members, they said.
Two floors of the Parliament's Annexe building have been sealed, the sources added. This is the second case of an official posted in the building