Sarah Michelle Gellar reacts to 'Buffy' co-star Anthony Head's death:'I'm not OK'

Sarah Michelle Gellar is mourning the death of her Buffy The Vampire Slayer co-star Anthony Head.

Taking to her Instagram handle on Friday, the 49-year-old actress shared a photo of herself with Anthony, his daughters, and their Buffy co-star Seth Green as she paid tribute.

“Tell Giles I figured it out and I’m ok” Well I don’t have it figured out and I’m not ok. But I know I’m the lucky one because I knew you," penned Sarah.

"Thank you to Daisy and Emily who not only shared their dad with me, but with the world," added the Cruel Intentions actress.

For those unversed, Anthony breathed his last on June 5 at the age of 72. The actor's death was announced by his family in a statement to the BBC.

"It is with heavy hearts that we announce the death of our extraordinary father, Anthony Head, " Anthony's daughters, Emily and Daisy Head, said. "He passed away peacefully of complications due to pneumonia, surrounded by his family."

"It has been, and forever will be, an honour and a privilege to be his daughters, and to have witnessed firsthand the impact both he and his work have had on so many. We know how dearly he will be missed by friends, colleagues, and fans of the shows he was in - he loved his job very much, and he always considered himself incredibly lucky, to have been able to work alongside such exceptionally talented people, in such wonderful productions, across a career that spanned several decades," the statement read.

"Our grief is far greater than the hole he has left behind, but we know his legacy will live on, in the shows he was a part of, and in the audiences that love them. How lucky we are to know we are able to watch him doing what he loved, even when he is no longer with us. We kindly ask that our privacy is respected at this difficult time," concluded the statement.