Julia Roberts 'emotionally broken' after mom's cancer diagnosis

Julia Roberts has suffered an "emotional breakdown" after her mother was diagnosed with cancer just prior to the actress' half-sister Nancy Motes committing suicide, according to reports.

Doctors found a cancerous tumor on Betty's lung during a routine MRI scan and everyone went frantic with the sad news, the Mirror reported.

According to a source, the 46-year-old actress asked her mother to shift her base to her Malibu home and changed her mother's phone number and locked her inside her house which affected her half- sister Nancy.

The 'Pretty Woman' star, who was shattered after learning of her mother's disease, has plunged further down after her sister's death.