A day after Independent Democratic Conference Leader Jeff Klein was accused of forcibly kissing a then-staffer everyone in Albany — including Klein himself — backs an investigation into the alleged 2015 incident.

But it’s not clear who will be doing the investigation.

Senate Republicans distanced themselves from holding a formal inquiry into the matter, with Senate Majority Leader John Flanagan saying no formal complaint has been made and that the Senate Ethics Committee did not have jurisdiction.

The chairwoman of the Senate Ethics Committee, Sen. Elaine Phillips, said in a statement her panel was reviewing internal policies.

“Each and every assertion of sexual harassment must be taken seriously and should be investigated,” she said. “The Senate Committee on Ethics and Internal Governance is responsible for reviewing internal Senate policies and educating Senate members about those policies. Legally, both JCOPE and the Legislative Ethics Commission are the entities with the legal jurisdiction to investigate sexual misconduct complaints against state government officials, including State Senators.”

A likely venue is the Joint Commission on Public Ethics, which has investigated and released reports on accusations of harassment leveled against Assemblyman Vito Lopez and Assemblyman Dennis Gabryszak. JCOPE has been criticized at times for an opaque process and good-government organizations have questioned its effectiveness, given the panel is composed of appointees of the governor and legislative leaders.

JCOPE does not necessarily need a referral to start an investigation.

“We cannot comment, as a matter of law, on whether an investigation has been commenced or on the status of any investigation that was commenced,” said spokesman Walt McClure. “JCOPE can commence an investigation on its own.”

As for Klein, his spokeswoman reiterated he would be supportive of an investigation into the allegation.

“As Senator Klein said yesterday, he welcomes any investigation into this alleged incident,” she said.