Serial Killer Who Referred To Himself As "The Beast" Accused of Killing 6, Including His Own Mom

Gibson, who reportedly called himself "The Beast," already had a slew of convictions for charges including weapons, forgery, assault and drug dealing before he was found guilty in 2010 of manslaughter and possession of a firearm during the commission of a felony, according to NBC Philadelphia.

The manslaughter and firearm possession convictions stem from the July 6, 2008 fatal shooting of Stanley Savon Jones in Wilmington, Delaware. After receiving a 13-year sentence, Gibson was released from prison in June of 2020, and required to serve six months at a community corrections center, NBC Philadelphia reported. While at the center, Gibson fought with other offenders and was sentenced to six more months in prison, plus 18 months probation after being released. 

He was then released from prison on December 20, 2020, according to the Delaware Attorney General's office. Gibson was prohibited from leaving Delaware and from carrying a gun as part of his probation. 

But he left Delaware in February of 2021, according to NBC Philadelphia, and he was detained in Philadelphia for violating his probation. Gibson was sent back to Delaware in March of 2021 and sentenced in April to 31 days, which was accounted for with time he'd already served. He was released again on April 27, 2021.

On February 8, 2021, Christine Gibson, 54, was found shot to death at her office in Philadelphia, where she worked as a mental health counselor. Philadelphia police determined within a day that her son, Keith Gibson, was the main suspect in her murder, according to the Philadelphia Inquirer.

“Early reports suggest Mr. Gibson’s mother informed numerous friends and family that if something were to happen to her, her son would be the one responsible,” Gibson’s probation officer wrote in court documents, the Inquirer reported.

Christine Gibson's body was discovered by her colleague and friend, Linda Osuigwe.

“We were suspicious, but we had no proof,” Osuigwe told CBS News.

Police believe that Gibson's mother was not his first alleged victim after being released from a Delaware prison in December of 2020.

Eric Flores, 50, and Roy Coban, 42, were found shot in the head and killed in January of 2021 in the North Philadelphia store they owned, Al Madinah Traders. Police later tied the ballistics found at the crime scene to Gibson’s gun, KYW Newsradio reported.

“He was an amazing person,” Coban’s widow, Darlene Roman, told NBC Philadelphia in April 2024.  

Gibson was arrested for being out of state, a parole violation, and was returned to Delaware from Philadelphia in March of 2021. Although the Delaware Department of Corrections recommended that Gibson be sentenced to six and a half years in prison for the violation, the judge instead sentenced him to 31 days, time served, and he was released in April 2021, according to NBC Philadelphia. A spokesperson for the department said that during the sentencing, Gibson's public defender had shared that “Gibson had prospects for stable housing, a job, and community supports upon release."

Gibson requested a transfer to Pennsylvania and checked in with state parole officers in Philadelphia on May 12, according to the Inquirer. 

On June 5, 2021, Gibson allegedly pushed Christine Lugo, a 40-year-old mother, into a Philadelphia Dunkin’ store where she was manager, as she was opening the store. Police said surveillance video showed him robbing Lugo and the store of $300, before he allegedly shot and killed her, and ran.

On May 15, 2021, just three days after checking in with parole officers in Pennsylvania, Gibson shot and killed Leslie Ruiz-Basilio, 28, during a robbery at a Metro PCS store in Elsmere, Delaware, and stole her vehicle, according to NBC Philadelphia. Survillance video from the store showed Gibson confronting her, before he took her to the back of the store and shot her in the head at point-blank range as her arms were raised.

A month later, Gibson went on a murder spree, first allegedly slaying Lugo on June 5 in Philadelphia, then shooting and killing Ronald Wright, 42, during a street robbery in the early morning hours of the next day in Delaware. Wright was killed at his home, a known “drug house,” NBC Philadelphia reported. Gibson was later found with Wright’s shoulder bag.

On June 6, Gibson shot Belal Almansoori, a Rite Aid clerk, during a robbery at that Wilmington, Delaware, store. Almansoori lay on the floor of the store and pretended to be dead after Gibson’s first shot missed him. Video showed Gibson stealing several items, then shooting the teen clerk in head, and turning to shoot him again before leaving the store. Almansoori survived and testified at Gibson’s trial, NBC Philadelphia reported.

Police arrested Gibson on June 8 after finding him thanks to a GPS tracking device that a clerk mixed in with cash as the store was being robbed, according to NBC Philadelphia.

Gibson was wearing a bulletproof vest as he was taken into custody and was armed with a knife and a loaded revolver that was connected to several of the crimes.

In November of 2023, a jury in New Castle County, Delaware, convicted Keith Gibson of the murders and robberies of Leslie Ruiz-Basilio and Ronald Wright. Additionally, he was found guilty of the attempted murder and robbery of Belal Almansoori, and convicted of several other charges. Prosecutors showed surveillance video of the shootings of Ruiz-Basilio and Almansoori and argued that ballistics evidence linked those shootings, as well as Wright’s murder, to a revolver found on Gibson when he was arrested.

In March of 2024, Gibson was handed seven life sentences in prison, plus 296 years, for 22 convictions, according to NBC Philadelphia.

“It is difficult to fathom how much more destruction he would have caused had he not been apprehended,” Delaware Attorney General Kathy Jennings said in a statement.

Despite sentences in Delaware that ensure that Gibson will never get out of prison, the families of Gibson’s alleged victims in Philadelphia are still looking for justice.

“I deserve closure on the situation and my mom deserves justice," Lugo's daughter, Frances Rodriguez, told NBC Philadelphia in April of 2024. "She loved us all and she honestly was just a shining light in all of our lives. She was there when we needed her, when we needed someone to lean on, she was there.”

The Philadelphia district attorney has approved murder charges against Gibson for the four killings he's accused of there. 

He appeared in court in Philadelphia in September of 2024 for a preliminary hearing, where new charges of contempt were added after Gibson had repeated outbursts in court, NBC Philadelphia reported. After interrupting testimony at least 10 times, Gibson was removed from the courtroom.