Dzulkifli is now with Scivetti & Associates, the firm hired by Umno to claim monies seized in 1MDB probe.
Dzulkifli Ahmad says the apology was conveyed via a text message.
Shukri Abdull says he left MACC previously because he didn't want to serve under the former chief.
UPDATED 3.36PM | A check by Malaysiakini reveals that the four have been barred from travelling abroad.
Dzulkifli Ahmad's latest stint comes following his resignation from the anti-graft body yesterday.
The outgoing chief congratulates Mahathir and thanks the MACC for the support it had given him.
Dzulkifli Ahmad tenders his resignation to the chief secretary this morning.
Dzulkifli is alleged to not have sought Syariah court's permission for his second marriage.
UPDATED 9PM | PARLIAMENT | Ministerial replies in Parliament indicate that police and MACC are not pursuing action against Dzulkifli
It's been four months, yet the case of alleged extra-marital affair is still not concluded, says DAP MP.
Maybe the MB is daydreaming, says Dzulkifli Ahmad on Azmin's claim that MACC raided his office in the Ijok land issue.
National Oversight and Whistleblowers responds to MACC's proposal to gauge graft levels internally.
However, he said MACC had visited five companies to help in the investigations connected to land in Ijok.
A more effective special corruption index to analyse and measure the level of corruption, says MACC chief.
MP SPEAKS | We must lead the fight against corruption, instead of becoming a global kleptocracy.
MACC chief Dzulkifli Ahmad says the commission cannot combat graft alone and needs the help of the public.
Could the appointments be linked to allegations of misconduct, asks Mohd Haniff Khatri Abdulla.
Advisers include Ramon Navaratnam, Lee Lam Thye and Indah Water chair Abu Zahar Ujang.
Gobind Singh Deo questions why police have gone silent on this issue.
'We will ensure our job and responsibilities are not affected, and will give full cooperation,' says Dzulkifli.
Any action will be based on information received, and only if there's basis for it, says Dzulkifli Ahmad.
Probes into factory in Bukit Mertajam and Felda Global Ventures are both nearly complete, says MACC chief.
IGP says the cops have to investigate again after receiving instructions from the AGC.
PARLIAMENT | The outcome will decide whether the MACC will then investigate its chief Dzulkifli Ahmad, deputy minister says.
PARLIAMENT | If so, Teo wants to know who will probe Dzulkifli for money spent in Bali and HK.
If there is an order to investigate, why was a special task force created to investigate instead of the police?
'We know how to do our job,' states Fuzi Harun on probe into MACC chief's alleged extramarital affair.
YOURSAY | ‘Allow Dzulkifli Ahmad himself to deny or admit that the videos are fake or otherwise.’