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NEW YORK — One of New York City’s police unions said officers were “intentionally poisoned” and another warned cops couldn’t even have a meal without “coming under attack” after officers were sickened by a toxic substance in milkshakes from a Shake Shack, but hours later, NYPD Chief of Detectives Rodney Harrison said there had been no criminality.

Mayor Bill de Blasio on Tuesday slammed the unions over what they’d said.

“I would think the unions would trust the NYPD to find the truth, and I thank Chief Harrison for so rapidly getting the truth out,” he said. “These union leaders don’t want the truth. They just want to sow division and we have to figure out what the limits are on their right to do that.”

He also blasted the Sergeants Benevolent Association, which recently shared information on his daughter’s arrest at a protest.

“The SBA leadership has engaged in racist activities so many times I can’t even count it and anyone who is tweeting in favor of Confederate monuments is supporting the structural racist history of this country, I’m just sick of it,” he said.

De Blasio said he’s been sick of it for years.

“What I’ve seen from the SBA in particular, and too often from the PBA (Police Benevolent Association), is efforts to divide us, to hold us back, to create all sorts of negativity to, to push back progress, to undermine efforts at unity, it’s there,” he said.