MANCHESTER, N.H. —

The man who murdered two Dartmouth professors when he was 17 will get a new sentencing hearing in April.

Robert Tulloch is serving two concurrent life sentences for killing Half and Susanne Zantop in 2001.

>> Timeline: 2001 murders of Dartmouth College professors; Follow developments in case

In 2012, a Supreme Court decision banned life sentences without parole for minors.

Tulloch is now scheduled to get a new sentence hearing on April 20. That's expected to last for four days.

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