Bitter foes Mahathir Mohamad and his estranged protégé Anwar Ibrahim met for the first time in 18 years on Monday, underscoring shifting political alliances caused by a corruption scandal plaguing Malaysia's current leader.
Mahathir inflamed social media with a show of support at a court appearance by Anwar, the former opposition leader jailed last year following a controversial sodomy conviction -- the same charge Mahathir hurled at him in 1998.
The face-to-face encounter was the first since their stormy 1998 rift, Anwar's wife Wan Azizah Wan Ismail said on Facebook.
Images of the political heavyweights smiling and shaking hands were shared widely online, highlighting the political flux caused by outrage over scandal-tainted Prime Minister Najib Razak.
Najib is accused of involvement in looting billions of dollars in state money. He denies the charge and has cracked down in response.
Mahathir, who imposed his will on Malaysia for 22 years as prime minister before retiring in 2003, has led calls for Najib's arrest.
Any potential rapprochement between the cagey Mahathir and the charismatic Anwar -- whose rivalry continues to reverberate in Malaysian politics -- could be a game-changer.
Anwar was heir apparent to Mahathir until he was sacked in 1998 by his boss over political differences, an episode that deeply divided the country.
Charged with sodomy and corruption, Anwar was jailed six years, but emerged to revitalise the previously ineffectual opposition until he was jailed again in 2015 by Najib's government.
Mahathir played down Monday's meeting.
"I don't know about friends, but I know I talked to him," Mahathir said, chuckling, when reporters asked after the encounter whether the two were friendly again.
"I met him and had a long chat with him about what he was doing," he added, while denying they had "made peace."
Mahathir said he was merely showing support for a legal challenge launched by Anwar against a draconian new security law rammed through last year by Najib.