The Rockland County District Attorney’s Office executed a search warrant at the Hi-Tor Animal Care Center in Pomona yesterday as part of an on-going investigation. The DA would not elaborate as to the purpose of the search. In a statement, County Executive Ed Day said the contract agency performs vital services and is monitored by the Rockland County Department of Health. Day pledged to cooperate fully with the DA’s investigation. Hi-Tor Board President Debbie DiBernardo could not be reached for comment.