Two world-record holding cats who went missing last month after a Farmington Hills house fire have been found dead in the wreckage of the home, their owner posted Wednesday on Facebook.

Will Powers wrote that the remains of Arcturus and Cygnus were discovered in a basement room. However, two other cats that were at the house at the time of the fire may still be alive.

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During the Nov. 12 fire on the 34000 block of Quaker Valley Lane, Powers opened doors in the hopes that the cats would escape the flames.

"Despite Will's incredible efforts, we confirmed today (during the excavation of the final room in our basement) that Cygnus and Arcturus remained hidden in our home and succumbed to smoke inhalation," a post on Powers' page reads.

The post says the cats were best friends, and "it gives us a small amount of peace that they were together at the end of their amazing journey on this earth."

Arcturus held the record for the world's tallest domestic cat, measuring about 20.1 inches. Cygnus was the domestic cat with the world's longest tail, measuring at more than 17.5 inches.

Two other felines named Sirius and Yuki also disappeared following the fire. The post said there's no evidence to indicate they died in the home, and the search for them continues.

The post directs people to the website www.starcatsdetroit.com for more information about the cats.

Powers' sister, Brittney Powers, told the Free Press that investigators determined it was an electrical fire. An electric massage chair that was plugged in — but not turned on — caught fire, she said.

Contact staff writer Ann Zaniewski at 313-222-6594 or azaniewski@freepress.com. Follow her on Twitter: @AnnZaniewski.