Former Civic Party lawmaker Dennis Kwok Wing-hang has given no response to media reports that he has moved to Canada with his family.
Party chairman Alan Leong Kah-kit said he has not received Kwok's application to withdraw from the party.
Kwok was disqualified from the Legislative Council, along with fellow party lawmakers Alvin Yeung Ngok-kiu, Kwok Ka-ki and Kenneth Leung Kai-cheong, for "endangering national security" on November 11.
Ten days after his disqualification, Kwok announced his departure from political life after eight years.
Eastweek magazine reported Tuesday that in the week following the declaration, he fled to London alone before going over to Canada. His wife and two sons went to Vancouver in mid-February.
Kwok was born in Edmonton, Alberta, in 1978.
He has been a member of the party since 2006 and was first elected a lawmaker in 2012 as a representative of the legal functional constituency. He gave up his Canadian passport that year. In 2016, he was reelected.
At the height of anti-fugitive bill protests in 2019, Kwok went to the United States in August and September to meet politicians to discuss moving forward the now-passed Hong Kong Human Rights and Democracy Act bill, which imposes sanctions on Hong Kong officials for alleged human rights violations.
Kwok presided over Legco's house committee since October 2019, when the committee was paralyzed for about seven months after failing to elect someone to fill the chair.
He faced criticism from the Hong Kong and Macao Affairs Office of the State Council and the central government liaison office on April 13 for causing major delays in the reviewing of bills.
The Eastweek magazine report also stated that Kwok's wife, Leslie Andrea Wong, still owns a property in Tseung Kwan O's Lohas Park, which is currently under the care of her family.
She previously worked as an assistant solicitor in a law firm named Woo Kwan Lee & Lo. The firm's website stated that she was admitted as a solicitor in Hong Kong in 2005, and in England and Wales in 2006.