Yoko Ono, widow of John Lennon, is reportedly concerned about the safety of Lennon's two sons after the recent attack on former Beatle George Harrison.
"Knowing that our close friend and his family have been subjected to a violent incident, I am, naturally, most concerned about the safety of Julian and Sean," Ono said in the Independent on Sunday, a British newspaper.
Ono has continued to live in the New York City apartment building where she and Lennon lived with their son, Sean, when the star was killed in 1980 by Mark David Chapman.
In an attack a month ago, Harrison received a serious knife wound that collapsed his right lung. His wife, Olivia, was scratched and bruised when the couple fought off the attacker inside their mansion 25 miles west of London.
Chapman, serving a 20-years-to-life sentence in New York, is eligible for parole in December.