Charice pulled out of a concert in Singapore to return to the Philippines to be with her family.
"I am not going to be there to be part of David Foster and Friends concert," she tweeted. "I have to go back to the Philippines as soon as possible to be with my family."
According to the Associated Press, Charice's father, 40-year-old construction worker Ricky Pempengco, was in a small grocery store late Monday night. Laguna province's police chief, Senior Supt. Gilbert Cruz, said Pempengco brushed against a drunk man who became angry and stabbed him with an ice pick in the chest and back.
Police are still searching for the suspect and have deemed the killing random.
Charice and her father had been estranged for sometime, but she took to Twitter to express her grief over his death.
"I loved him and I will still love him," she said. "He's still my Dad after all."
Charice has appeared in three episodes of 'Glee' as Sunshine Corazon, a new student with a singing voice that makes Rachel Berry (Lea Michele) feel threatened. She's also appeared on numerous talk shows including 'The Oprah Winfrey Show' and 'The Ellen DeGeneres Show.'
Sneak peek at 'Glee' Season 3 cast photos, class picture style.