British student Meredith Kercher may have tried to call her mother in a last cry for help before she was overpowered and stabbed to death in Perugia in central Italy.

Kercher’s American roommate, Amanda Knox, 21, and her former boyfriend, Raffaele Sollecito, 24, are on trial accused of sexually abusing and murdering the Leeds University exchange student in November 2007. Kercher, 21, was found with her throat cut and semi-naked in her bedroom in the cottage she shared with Knox.

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Evidence revealed Friday showed that a call to Kercher’s mother, Arline, was made from her cell phone at 8:56 p.m. on Nov. 1, 2007. Kercher used the phone daily to call her mother, who was ill.

The call was cut off before she got through. The prosecution believes Kercher died between 9 p.m. and 11 p.m. because she refused to take part in a sex game with Knox, Sollecito and Rudy Guede, 21, a drifter who has already been convicted of murder and sentenced to 30 years in jail.

Investigators are not sure whether the call was a cry for help or was made involuntarily as Kercher struggled with her attackers.

Click here to read more on this story from the Sunday Times.