By Associated Press
February 28, 2012 at 02:50 PM EST

Oscar winner Jennifer Hudson is on the witness list for the upcoming trial of a man accused of killing her mother, brother, and 7-year-old nephew. The Chicago Tribune reports, however, that prosecutors haven’t yet disclosed whether Hudson will actually testify at William Balfour’s trial, which is slated to begin April 9.

Balfour was the estranged husband of Hudson’s sister, Julia. Hudson’s mother and brother were found dead in the family’s home on Chicago’s South Side in 2008. Her nephew’s body was found days later in a vehicle on the city’s west side.

A court filing by prosecutors last week contains detectives’ reports from interviews with Hudson after the deaths. According to the filing, Hudson told investigators she’d known Balfour since childhood and had advised her sister against marrying him.

Read more:

Jennifer Hudson discusses family’s murder with Oprah

Jennifer Hudson breaks long silence, discusses family’s murder on Vh1’s ‘Behind the Music’: ‘It was surreal’

Jennifer Hudson opens up about her late mother