Andrew Conley - US killer 'wanted to be like Dexter'

The former girlfriend of an Indiana teenager who pleaded guilty to murder says he told her he wanted to be just like the TV serial killer Dexter before he strangled his 10-year-old brother.

Alexis Murafski testified yesterday during the fifth day of 18-year-old Andrew Conley's sentencing hearing in the small Ohio River town of Rising Sun.