The City Council Ethics Committee on Monday determined that Council member Ruben Diaz Sr. used government resources inappropriately, but did not spell out precisely what he did wrong and whether he’d be punished.

The case stems from a July 16 complaint against the Bronx legislator.

“The committee found that Council member Diaz Sr did use council resources inappropriately,” chair Steven Matteo (R-Staten Island) said in a brief statement following all-day deliberations behind closed doors.

Matteo said the committee would reconvene soon to draft a resolution for submission to the entire Council, which could include a recommendation for punishment.

Diaz (D-Bronx) told reporters it was periodic messages to his constituents from his government email account — some of which allegedly cross the line into political territory — that landed him in trouble.

He said he was offered a deal to avoid punishment but refused.

“I did not do anything wrong,” he told The Post. “I have the right to inform my community and my constituents and the whole world of what’s happening and what’s going on.”

Diaz said he’d sent similar electronic mailings for more than a dozen years while in the state Senate without issue.