This originally appeared on ProPublica.

Fired by President Donald Trump, Preet Bharara left behind a mysterious, thirteen-word message. “By the way, I know what the Moreland Commission must have felt like,” he tweeted on Sunday.

Americans are getting used to deciphering the tweets of a president who eviscerates his enemies in 140 characters or less. So perhaps it’s inevitable that a public official whom he dismissed would fight back in the same way — and similarly raising questions about the tweeter’s intent and state of mind.

Advertisement:

A spokesman for the U.S. attorney’s office for the Southern District of New York said he could not elaborate on Bharara’s tweet. And the ex-prosecutor himself has made no further public comment, leaving those familiar with the Moreland Commission’s history to speculate about the presidential parallels.

The cryptic reference to the corruption-fighting commission, which New York Gov. Andrew Cuomo unexpectedly disbanded in March 2014, could simply mean that Bharara knows what it’s like to be let go when there’s still important work to be done. Or it could be read to accuse Trump, like Cuomo, of trying to axe an investigation before it brings down his friends. In the most sinister interpretation, it could even be a threat or a portent — since Cuomo’s allies ultimately faced justice anyway.

“I think Preet is way too smart to simply say something that might have wide-ranging implications without thinking it through,” said Chris Malone, a political science professor at City University of New York’s Lehman College. Malone said he thinks Bharara was “sending a message” that “you’re cutting off an investigation in midstream.”

Advertisement:

Following a series of corruption scandals involving state lawmakers, Gov. Cuomo created the Moreland Commission to Investigate Public Corruption, as it was formally known, in July 2013 to root out corruption in politics and state government. It was named for a 1907 law known as the Moreland Act, which gives the governor broad authority to investigate state agencies. The panel’s 25 members included current and former district attorneys from across the state who were empowered to issue subpoenas and compel testimony.

The panel issued a first draft of its findings in December 2013 and vowed to “proceed with ongoing investigations as we continue to follow the money.” Those investigations hadn’t reached their conclusion when, four months later, Cuomo abruptly dismantled the commission.

Cuomo said at the time that a package of modest ethics reforms agreed to by the legislature eliminated the need for the commission. But a subsequent New York Times investigation revealed that Cuomo’s aides undermined the commission as the panel’s subpoenas started getting close to the governor’s office. The timing suggested Cuomo was concerned that the commission might dig up unwelcome facts about his administration.

Advertisement:

Enter Bharara. After Cuomo disbanded the panel, the Moreland Commission handed over documents, computer files and other materials from its investigation to the federal prosecutor, who vowed to take over its mantle.