Call 888-293-6412 to enquire about our investigative services. Contacting Colonial Investigative Group Colonial Investigative Group P.O. Box 311 Ipswich, MA 01938 info@colonialinv.com  888-293-6412 781-620-0016 Our investigators service businesses across the Northeast, including Maine, Massachusetts, Vermont, New Hampshire, Rhode Island and Connecticut. Call us to discuss your requirements 888-293-6412 781-620-0016