Tiger Woods says that his mother, Kultida, has died at age 80. The golfer credited her for his success and encouraging his signature look of red shirts on Sunday.

A frequent presence in her son’s public life, she stood by his side during a period of scandal that took him away from golf.

Tiger Woods announced that his mother, Kultida, died on Tuesday morning. No cause of death was immediately available. “My Mom was a force of nature al her own, her spirit was simply undeniable,” Woods said in a statement on social media.