Mother, son plead not guilty in plot to murder Peoria man - KFVS12 News & Weather Cape Girardeau, Carbondale, Poplar Bluff

Mother, son plead not guilty in plot to murder Peoria man

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Michelle Gibson, left, and her son Steve Gibson Jr., are accused of orchestrating a plot to have 39-year-old Steven Gibson killed. (Source: Maricopa County Sheriff's Office) Michelle Gibson, left, and her son Steve Gibson Jr., are accused of orchestrating a plot to have 39-year-old Steven Gibson killed. (Source: Maricopa County Sheriff's Office)
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PHOENIX (CBS5) -

A mother and her 16-year-old son pleaded not guilty Monday morning to plotting the murder of her husband.

Michelle Gibson, 41, and Steven Gibson Jr. are accused of orchestrating a plot to have 39-year-old Steven Gibson killed. Their next court date is May 31 before Commissioner Steven Lynch

Steven Gibson was found beaten and stabbed to death in his garage March 1, according to Peoria police.

A police report stated that Eric McBee, 16, met with an unidentified 16-year-old boy, Steven Gibson Jr., a 14-year-old girl and Michelle Gibson about killing her husband.

The plan involved subduing her husband with chloroform and then loading him in his own truck, driving him to a nearby park and shooting him in the head near a bridge. Police said the plan also entailed scattering pills on the body to make it look like a drug deal gone bad. Michelle Gibson and her son told the accomplices that the body needed to be found so a money inheritance could be paid out.

The mother-son duo offered the 16-year-old boy and McBee $2,000 to split once he was dead. The 16-year-old's mom, unaware of the plot, called and told him she was going to pick him up. He did not return to the home, according to police.

Police said Michelle Gibson supplied the unidentified boy with a handgun with orders to kill her husband.

Michelle Gibson and her daughter left the home about 10:30 p.m. and while they were gone, McBee hit Steven Gibson in the head three times with a baseball bat while he was asleep in bed. Police said McBee beat Steven Gibson again with the bat while he was down on the bathroom floor. Police said after talking with McBee by phone, they believe Steven Gibson Jr., was dropped off at the home by his mother and helped kill his father by stabbing him three times with a knife and slitting his throat.

Police believe McBee, Steven Gibson Jr. and the 14-year-old girl moved the body onto a metal box dolly. They heard sirens while attempting to put the body in the truck and McBee and the girl took off on foot.

Police said Steven Gibson Jr. tried to clean up the home and hide evidence and when his mother returned she also helped get rid of evidence. She then called police to make it appear as though Steven Gibson was found murdered in the garage.

Michelle Gibson claimed her son was with her that night while she was shopping, but surveillance video and cell phone records don't show that. Police said Michelle Gibson stated in an interview that she likes to play "Marco Polo" with the cell phones sometimes while they shop.

On March 28, Michelle Gibson was arrested and she was taken to the police station where she requested an attorney, according to police records.

When Michelle Gibson's 17-year-old daughter was interviewed, she said her brother told her that he was the one who stabbed their father.

Michelle Gibson faces one count of conspiracy in first-degree murder, conspiracy and hindering prosecution.

Steven Gibson Jr. was arrested on March 27 and was charged as an adult on first-degree murder and conspiracy charges.

McBee pleaded not guilty to first-degree murder charges and his next court date is April 29.

The teenage girl with McBee was interviewed and released and has not been charged at this time, according to Peoria police, and neither has the 16-year-old boy who Michelle Gibson allegedly offered to hire in the murder plot.

Copyright 2013 CBS 5 (KPHO Broadcasting Corporation). All rights reserved.

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