Air ambulance company Guardian Flight says it has not been able to find three crew members who died in a crash of the company’s plane in Southeast Alaska in January.

A statement on the company’s website on March 27th says the search for the pilot, flight nurse and paramedic lost in the January 29th crash is wrapping up. Guardian Flight does plan a helicopter search of the shoreline for any remaining pieces of the aircraft that may have washed ashore.

The company’s Randy Lyman writes, “This is very disappointing to their families and our entire Guardian Flight team.” The plane was flying from Anchorage to Kake to pick up a patient when it went down in the waters of Frederick Sound. Searchers were able to recover the cockpit voice recorder and other parts of the plane. The National Transportation Safety Board is investigating the crash.

Guardian Flight plans to hold a memorial in Juneau in the next few months.