Lindsay Lohan has yet to visit her dying grandfather in hospital, according to her father Michael.

The 'Mean Girls' actress was planning to visit the New York hospital where Richard Lohan, 73, is being treated for terminal colon cancer, but Michael claims the 21-year-old beauty is being prevented from making the trip by her mother Dina.

He said: "Dina is still making it hard as hell for me to see my children. Even though my father is dying, my parents still haven't seen my children. Dina told me, 'It's up to the kids if they want to see their grandparents.' But she's made no effort to put them in touch or make this happen. That is the bottom line."

Michael revealed Lindsay, her sister Ali and brother Cody have also not seen their grandmother Marilyn, Richard's wife, who was involved in a car crash over the Easter holidays.

He said: "My mother Marilyn was flown by helicopter to the hospital on Easter Sunday after hitting a telephone pole and tree. Also, my father went into heart failure again yesterday - and yet not one of the kids has seen him."

Michael, a born-again Christian, also revealed he is planning to sue Dina over her upcoming reality show 'Living Lohan', set to premiere on TV network E! this summer.

He added to the New York Daily News newspaper: "It's the exact same show I pitched. She even used my title."

A representative for Lindsay is yet to comment.

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