A teenager threw herself under a train in front of her horrified classmates because she was being bullied at school, it has emerged.
Felicia Garcia, from Staten Island in the US, sent a Tweet days before she committed suicide on Wednesday which said: "I can't, I'm done, I give up".
A friend of Felicia's posted a photo of the teen on Twitter, writing: "You were such a strong girl, it's not fair you were bullied and pushed that far."
The 15-year-old's tragic death will fuel worldwide calls for a tougher stance on bullying, following Canadian teenager Amanda Todd's suicide after she was hounded by bullies for years.
Friends of Felicia told reporters the Tottenville High School student had been bullied after having sex with four males from the football team.
"Later on they wouldn't leave her alone about it. They just kept bullying her and bullying her," the New York Daily News reported.
One friend, Alissa Compitello, tweeted:
On the day of her death, Felicia was "smiling, like everything was going to be ok," said one classmate.
Letters have been left for Felicia, addressing the bullying, with one reading: "I hate the football team for doing this. You didn't deserve it."
"She was going through a really hard time," one of Felicia's friend said. "I think it was bullying."
Felicia's last Tweet before she committed suicide
Another classmate, 16-year-old Sara Brager, witnessed Felicia's jump from the Huguenot station platform.
"It was the most horrible thing I've ever seen," she said.
"Just before she fell, she said, 'Finally, it's here".
The New York Police Department says it is currently investigating allegations bullying drove the student to her death.