Among them was his chief of staff, General Abdelrazak al-Nadhuri, who survived a vehicle bombing in Libya's second city Benghazi on April 18.
Libya's eastern-based army commander Thursday said Thursday he was "in good health" after returning to the eastern city of Benghazi from a medical treatment trip to France for over two weeks.
Haftar, 75, was greeted by a delegation of senior officials after landing on a late afternoon flight from Cairo, according to the statement, posted on the Facebook account of Haftar's Libyan National Army (LNA).
"I should be addressing you standing up but I am obliged to do so sitting down", Haftar quipped, seated in front of a bank of microphones on an ornate table.
Libya has been gripped by chaos since a NATO-backed uprising toppled and killed longtime dictator Moamer Kadhafi in 2011, with rival administrations and multiple militias vying for control of the oil-rich country.
He has opposed a United Nations -backed transitional government that has been trying to establish itself from Tripoli for the past two years.
LNA spokesman Ahmed al-Mismari said that on his return Haftar would take part in celebrations marking the anniversary of his "Karama" (Dignity) campaign, the military operation he started in 2014 to drive Islamist militants and other opponents out of Benghazi.
Field Marshal Khalifa Belqasim Haftar is a Libyan military officer and the head of the Libyan National Army.