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Man Admits Killing Wife

A woman was stabbed to death in the parking lot of the sheriff’s Imperial Beach Station and her husband came to the deputies on the other side of the station holding two toddlers, saying he had just killed her.

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CHULA VISTA, Calif. – A man accused of fatally stabbing his estranged wife in a parking lot at a South Bay sheriff’s substation pleaded not guilty Friday to a murder charge and was ordered held on $5 million bail.

Marvin DuncanMarvin Dennis Duncan faces 26 years to life in prison if convicted of killing his 36-year-old wife, Rocio, said Deputy District Attorney Ted Minahan.

Shortly after 3:30 p.m. Wednesday, Duncan pressed an intercom button at a side door at the precinct house on Imperial Beach Boulevard, said sheriff’s homicide Lt. Glenn Giannantonio.

When a deputy answered, Duncan, who was holding two toddlers, announced he had just killed his spouse of three years, according to the lieutenant.

The mortally wounded victim was found lying on the ground on the west side of the substation. She died a short time later.

“He stabbed her repeatedly in the arm, chest, back of the head approximately 15 times,” said Minahan.

Duncan, 59, was detained for questioning and later arrested. The children, who were unharmed, were taken into protective custody.

Minahan said Duncan may have been motivated by the couple’s separation.

“Prior to the murder, the defendant was upset in regards to the separation with the victim as well as the child custody arrangement,” said Minahan.

Duncan will be back in court Feb. 21 for a readiness conference and Feb. 25 for a preliminary hearing.

jail-cellSAN DIEGO — A San Diego man was behind bars Thursday on suspicion of fatally stabbing his estranged wife in a parking lot at a South Bay sheriff’s substation.

Shortly after 3:30 p.m. Wednesday, Marvin Dennis Duncan, 59, pressed an intercom button at a side door at the precinct house on Imperial Beach Boulevard, according to sheriff’s homicide Lt. Glenn Giannantonio.

When a deputy answered, Duncan, who was holding two toddlers, allegedly announced that he had just killed his 36-year-old wife, Rocio.

sheriff’s substationThe mortally wounded victim was found lying on the ground on the west side of the substation, the lieutenant said. She died a short time later.

Duncan was detained for questioning and later arrested. The children, who were unharmed, were taken into protective custody.

The motive was under investigation.

Duncan was being held at San Diego Central Jail without bail pending arraignment, scheduled for Friday afternoon.

IMPERIAL BEACH, Calif. – Sheriff’s detectives were investigating a possible homicide that may have happened in their own parking lot in Imperial Beach Wednesday afternoon.

sheriff’s substationHomicide investigators were called to the San Diego Sheriff’s substation at 8th Street and Imperial Beach Boulevard around 3:40 p.m. after a San Diego man carrying two toddlers told deputies he had killed his wife, investigators said.

“He had a knife in his waistband,” said Sheriff’s homicide Lt. Glenn Giannantonio.  “Without even being asked or told, he took the knife out and dropped it on the ground.”

Deputies took the man into custody.

On the west side of the Sheriff’s parking lot, deputies found a woman lying on the ground next to a white pickup truck with multiple stab wounds.  Soon after, she died at the scene.

Investigators said they don’t know what led to the stabbing, but they believe it took place in the parking lot.  Surveillance video may have captured what happened.

The identities of the victim and suspect will be released after notification of the next of kin.

The children were not injured and the investigation is continuing.

“Something must have been terribly, terribly wrong,” said Joy Kerkhoff, who was walking passed the substation during the investigation. “You never know what is in somebody else’s head or heart.”

Anyone with information about this incident is asked to call the Homicide Detail at 858-974-232 or after hours at 858-565-5200. You can remain anonymous and be eligible for up to a $1,000 reward for information leading to an arrest.  Call Crime Stoppers at 888-580-8477.

SAN DIEGO – A woman’s body was discovered inside a truck parked at the Imperial Beach sheriff’s substation Wednesday after a man admitted to killing her, deputies said.

Imperial Beach body foundSan Diego Sheriff’s said the man walked into their station on the 800 block of Imperial Beach Boulevard at 4 p.m. admitting to killing his wife.

It appeared that the partially clothed woman’s body had fallen out of the truck in the station’s parking lot.

Homicide detectives were investigating.

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