Ald. Danny Solis (25) resigned Tuesday evening as chairman of the City Council's Committee on Zoning, Landmarks and building standards, less than 12 hours after the the Sun-Times reported he received sex acts at massage parlors, the erectile dysfunction drug Viagra and campaign contributions in exchange for ushering deals through City Council.

Mayor Rahm Emanuel said in a statement that Solis "made the right decision" by resigning.

“Alderman Danny Solis has recognized that he cannot effectively preside over the matters before the Committee on Zoning, Landmarks and Building Standards, and he has communicated with my office his intent to resign as chairman," Emanuel said. "I commend him for making the right decision for the City Council and the City of Chicago.”

Solis will be replaced by the committee's vice chairman, Ald. James Cappleman (46) under the City Council's rules of procedures.

It will be up to Cappleman to shepherd the mega-projects fueled by $1.6 billion in subsidies through the City Council during Emanuel's final weeks in office.

Solis is the second close ally of Emanuel's to be forced from a powerful perch by the spiraling investigation that has upended politics as usual at City Hall. The Sun-Times reported that Solis wore a wire as part of the investigation into Ald. Ed Burke (14), who was forced to step down as chairman of the Finance Committee after being charged with attempted extortion. Burke maintains his innocence.

Solis, who is not running for re-election, has not been charged with wrongdoing.

Two of the candidates running to replace Solis — Hilario Dominquez and Alex Acevedo — reiterated their calls Tuesday for the alderman to step down, although window for Emanuel to appoint a replacement before Solis' replacement is elected is closing quickly.

At a City Hall news conference, mayoral candidate Lori Lightfoot called for Emanuel to issue an executive order to rein in aldermanic prerogative, as she called for in her platform, and audit zoning decisions going back to 2014.

Rival Paul Vallas also headed to City Hall — brandishing another broom — to blast opponents’ past ties with Solis and Burke.

"I think I’m going to need a bigger one to clean up City Hall,” Vallas said, who has an ethics plan. "This is a new low."

Mayoral candidate Amara Enyia, who released a good governance plan several weeks ago, noted her lack of ties to Burke or Solis.

"This is just the tip of an iceberg that could entangle more public officials who've been part of the political machine for years," Enyia said.