Glee Star Charice's Father Stabbed to Death

Shocking, sad news for Charice.

The singer and Glee star cancelled a Tuesday concert in Singapore after learning that her estranged father was stabbed to death in in his hometown in the family's native Philippines.

The Associated Press reports that her dad, 40-year-old construction worker Ricky Pempengco, was at a grocery store in San Pedro late Monday when he bumped into a drunk man -- who then became enraged and stabbed him with an ice pick, according to local police.

Senior Supt. Gilbert Cruz told the AP that the murder appeared to be random, and that Pempengco and his assailant had no prior grudges.

"I am not going to be there to be part of David Foster and Friends concert," Charice, 19, told fans on Tuesday on Twitter. "I have to go back to the Philippines as soon as possible to be with my family."

Although she and her dad were long estranged -- her mother left him when Charice and her brother were young -- she added, "I loved him and I will still love him," she wrote. "He's still my Dad after all."