Actress Megan Hilty spoke out about the tragic deaths of her pregnant sister, brother-in-law and nephew in a floatplane crash over Labor Day weekend.

"On Sunday afternoon, a small float plane crashed into Puget Sound off the coast of Whidbey Island. My beloved sister Lauren, brother-in-law Ross and baby nephew Remy were on that plane," the actress wrote in a lengthy post on Instagram. 

"To make this news even more devastating, my sister was eight months pregnant and we were expecting to welcome baby boy Luca into the world next month," Hilty added. 

While Hilty said the "last thing" she wanted to do was acknowledge the tragedy, the actress said she felt it was necessary due to inaccurate reporting by news outlets. 

COAST GUARD RELEASES NAMES OF THOSE ONBOARD SEAPLANE THAT CRASHED NEAR SEATTLE, LEAVING 1 DEAD AND 9 MISSING

Megan Hilty on the red carpet

Megan Hilty attends the Wallis Annenberg Center for the Performing Arts Spring Celebration "An Evening of Wicked Fun" honoring Stephen Schwartz on May 16, 2019, in Beverly Hills, California. (Rodin Eckenroth/FilmMagic via Getty Images)

"It's come to my attention that several news outlets have misgendered my sweet nephew and some haven’t even mentioned baby Luca," Hilty wrote. "Lauren and Ross left behind my niece who we are all holding in our hearts. Thankfully, she was not on the plane…"

"It is important these details be corrected to respectfully honor everyone we’ve lost and the loved ones they’ve left behind," Hilty added. 

SEATTLE SEARCH SUSPENDED AS COAST GUARD ENDS HUNT FOR PILOT, PASSENGERS OF FLOATPLANE CRASH 

The actress concluded the post by thanking her supporters for their "outpouring of love and support" in the wake of the devastating crash. 

Hilty is best known for her role as Glinda the Good Witch in "Wicked," which she starred in on Broadway from 2005-2006 before playing the role in different theaters. The performer also garnered a Tony Award nomination for her performance as Brooke Ashton in "Noises Off." 

Megan Hilty and her family smiling together

Megan Hilty posed with her sisters and mother while on tour in Australia in 2019. (Megan Hilty/Instagram)

The floatplane crash happened near Whidbey Island in Puget Sound, halfway between its destination and takeoff points. 10 people in total were killed. 

The crashed aircraft was identified as a single-engine de Havilland DHC-3 Otter propeller plane, according to the National Transportation Safety Board. The plane was operated by Friday Harbor Seaplanes, an organization that says it is "heartbroken" by the crash. 

Authorities searching near Seattle float plane crash site

A pair of U.S. Coast Guard vessels search the area Monday, Sept. 5, near Freeland, Wash., on Whidbey Island north of Seattle where a chartered floatplane crashed the day before.  (AP/Stephen Brashear)

"We don’t know any details yet regarding the cause of the accident," a statement from the company said. "We are working with the FAA, NTSB and Coast Guard.  We have been in communication with the families. We are praying for the families involved, including our pilot and his family." 

CLICK HERE TO GET THE FOX NEWS APP

Authorities are still investigating the cause of the crash.