Rescue 1122 said another body was recovered from the debris, taking the confirmed number of fatalities to 29. Human remains were also found during the operation and shifted to a hospital for further examination.
Read: Gul Plaza fire toll rises to 28 as DNA testing begins to identify victims
Deputy Commissioner South Javed Nabi Khoso said debris removal would not begin until all missing persons were accounted for. He said rescue and search work was continuing under the supervision of a technical team.
Officials said the number of missing people increased to 86 after the family of a 65-year-old man, Jahangir Shah, registered his details at the missing persons desk. Authorities said some entries were duplicated and were being verified.
Rescue officials said three more bodies were identified from previously unidentifiable remains through DNA testing conducted by the Citizens Police Liaison Committee. The identified victims included a 15-year-old girl and two adult men. Families have started receiving bodies from the morgue.
Read more: Death toll in Gul Plaza blaze rises to 26 as rescue work continues
Rescue teams entered the building nearly 40 hours after the fire erupted late Saturday night but faced repeated disruptions as flames continued to reignite in different parts of the structure. Officials said lingering smoke and intense heat have complicated operations, especially in collapsed sections of the plaza.
Speaking to the media at the site, a DC South official said the intact portion of the building was also being searched and access routes were being created inside the structure. He said the entire plaza would be demolished only after search operations were completed.
Authorities have temporarily sealed the adjacent Rampa Plaza, pending a report from the Sindh Building Control Authority to assess possible risks.
Also read: Gul Plaza fire causes Rs100 billion in losses, 1,000 shops destroyed
Police are also investigating the disappearance of two dumpers linked to the incident, officials said.
Relatives of missing persons voiced concern over debris removal, saying they feared human remains could be taken away along with the rubble.