Louisiana Police are now hunting down Pedro Alberto Monterroso-Navas following the death of his girlfriend and the abduction of his three children from their suburban New Orleans home.

Reports say Monterroso-Navas' girlfriend, Heidi Monroy, 25, was found dead in a bathtub from what paramedics said was head trauma due to a blunt force.

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Two children aged 8 and 5 had reported the incident to neighbors, knocking frantically on doors to say something was wrong with their mother.

Authorities began the manhunt for Monterroso-Navas, 43, shortly after receiving the call at past 3:00 a.m on Sunday, local time.

Monterroso-Navas is said to have fled the crime scene with three of his biological children,  a 14-year-old daughter and two sons aged 4 and 2. The 2-year-old boy is the biological child of Monterroso-Navas and Monroy, while the 8- and 5-year-old kids left behind were Monroy's own children.

He was last seen limping and wearing a blue shirt and black pants. It was not immediately clear if he had a getaway vehicle.

If caught, Monterroso-Navas faces second-degree murder for the death of Monroy.

Authorities are alerting the public that Monterroso-Navas, who was originally from Honduras, might use the alias Wilson Rigoberto Mina.

They have also issued a missing children alert for the three abducted children.

State police are calling on the public to send information on any sightings of Monterroso and the three missing children to the Jefferson Sheriff's Office at 504-364-5300 or by calling 911.

TagsPedro Alberto Monterroso-Navas, Louisiana murder, New Orleans murder, Heidi Monroy