The Department of Investigation on Monday executed search warrants at the Queens-based headquarters of Children’s Community Services, which has a contract with the city to operate 28 homeless shelters, said Upper East Side Councilman Ben Kallos.

Kallos said he was briefed on the probe by the Department of Social Services. The city will go to court to ask that another provider take over the locations, he said.

"No homeless services provider is too big to fail. If our homeless aren’t getting shelter beds that are safe and secure, the city can and will get a court order to bring in a provider that will do better,” Kallos told The News.