Lindsay Lohan has placed the responsibility for Anton Yelchin's death on "Hollywood" in a post uploaded to social media.
The 27-year-old Star Trek star died in a freak accident on Sunday, prompting Lindsay to share her thoughts about the "brilliant" actor.
Alongside a photo of Anton and some news articles, she wrote: "This is the result of #hollywood a beautiful life has come to an end ... A brilliant actor and a loving friend. Surround your life with good people and know who your #true #friends are my prayers and love goes out to Anton's family #anton. This breaks my heart. He was my friend I am so sorry to Anton's father."
Tributes have been paid to the actor who was found dead in the driveway of his home. He was killed when he was struck by his own car.
Figures from the world of entertainment, including Star Trek director JJ Abrams and Tom Hiddleston, have spoken with warmth about Anton.
Anton's vehicle rolled backwards down his driveway in Studio City, California, according to Los Angeles police officer Jenny Hosier.
The car pinned Anton against a brick letter box pillar and a security fence. He had got out of the car, but police did not say why he was behind it when it started rolling.
Anton was on his way to meet friends for a rehearsal, Ms Hosier said. When he did not arrive, the group went to his house and found his body.
Anton started his acting career with parts in indie films and television shows such as Judging Amy and The Practice before getting his big break in 2006 crime thriller Alpha Dog.
He is best known for playing Pavel Chekov in the rebooted Star Trek films. The actor is in the third film in the franchise, Star Trek Beyond, which is due to be released in the UK in July.
The accident took place early on Sunday morning.
Anton, an only child, was born in Russia. His parents were professional figure skaters who moved the family to the United States when Anton was a baby.
His publicist, Jennifer Allen, confirmed his death and said his family requested privacy.