Two Montgomery County residents have been identified as victims in a sightseeing plane crash in southeast Alaska that killed all nine people aboard.

Hugo Cambiaso, 65, and his daughter, Glenda Cambiaso, 31, of North Potomac died in the crash Thursday of a turboprop plane about 20 miles northeast of Ketchikan, near Ella Lake.

The passengers on the plane were on an excursion from a Holland America Line cruise ship, the Westerdam, that had departed Seattle on June 20.

Glenda Cambiaso, a graduate of the University of Maryland at Baltimore, was a social worker for Montgomery’s child welfare services. Co-workers are devastated by the news of her death, Mary Anderson, a spokeswoman for the county’s Department of Health and Human Services, said Saturday.

“She was well-loved by her colleagues,” Anderson said of Cambiaso, who had been with the department for five years. “This is a big, big loss.”

Others killed in the crash, the Associated Press reported, were Rowland Cheney, 71, and Mary Doucette, 59, of Lodi, Calif.; June Kranenburg, 73, and Leonard Kranenburg, 63, of Medford, Ore.; Margie Apodaca, 63, and Raymond Apodaca, 70, of Sparks, Nev.; and the pilot, Bryan Krill, 64, of Hope, Idaho.

On Thursday, the Coast Guard was informed that the DeHavilland DHC-3 Otter turboprop had disappeared. An emergency locator transmitter activated, and a helicopter pilot later spotted the downed aircraft. Recovery efforts were hampered by weather, and responders were not able to reach the plane until Friday. The cause of the crash is under investigation.

Chris John of the Ketchikan Volunteer Rescue Squad said the aircraft was sitting at a steep angle, and three of his squad members had to secure it so they could safely work to recover the bodies, the AP reported.

“All of us at Holland America Line are incredibly saddened by this news and our thoughts and prayers are with the families and friends of those lost in this tragic accident,” the company said in a statement.