President Donald Trump faced blowback from fellow Republicans Monday after he baselessly suggested that legendary director and actor Rob Reiner died because of Reiner’s anti-Trump views, injecting politics into the killing at a time when other conservatives expressed condolences.

Reiner, Trump wrote on Truth Social, was killed “due to the anger he caused others through his massive, unyielding, and incurable affliction with a mind crippling disease known and sometimes referred to as TRUMP DERANGEMENT SYNDROME, sometimes referred to as TDS.”

Trump’s comments are not supported by currently available public information from authorities. He prefaced his allegations by saying the killings were “a very sad thing.”

Reiner and his wife, Michele Singer Reiner, were found dead in their Los Angeles home Sunday afternoon, apparently from stab wounds, according to a person close to the family. The couple’s son Nick Reiner has been arrested in connection with their deaths, according to two law enforcement sources with direct knowledge of the investigation. Nick Reiner has spoken publicly about his struggles with addiction and homelessness.

Trump crossed paths with Michele Singer Reiner earlier in their careers; she was the photographer who took the famous picture of Trump that appeared on the cover of his 1987 book, “The Art of the Deal.”

The White House did not immediately respond to a request for comment on what information Trump might have about a motive for the killings.