Life in prison for man who killed son, ex-girlfriend

CORVALLIS, Ore. - A man who killed his ex-girlfriend and their 1-year-old son will spend at least 50 years in prison for his crime.

Gustavo Martinez-Aquepucho, 22, was sentenced to life in prison with the possibility of parole after 50 years on Monday morning.

He pleaded guilty in September to two counts of aggravated murder in the deaths of his son, Theo, and the baby's mother, 19-year-old Kelsey Baker.

After Baker broke up with him, he plotted to kill her, their 1-year-old son and himself so they could be together in the afterlife, according to court documents.

On Friday April 29, 2011, he took money out of the bank and tried to buy a gun.

When he couldn't purchase a firearm, he concocted a new plan, deputies said Martinez-Aquepucho told them after his arrest.

He disguised a mixture of cold and flu medicine as a beverage and gave it to Baker, knocking her out.

When the mixture wouldn't put baby Theo to sleep, Martinez-Aquepucho put duct tape over the child's mouth.

He then slit both their throats before using the knife to cut his own wrists.

Martinez-Aquepucho woke up the next day, still alive.

He called 911, he told deputies, hoping to die by "suicide by cop."

Instead, police took him into custody and booked him on aggravated murder charges.