SAN DIEGO -- The volunteer search for missing 2-year-old Jahi Turner has ended and the toddler's maternal grandmother, who spearheaded the effort, is heading back to her home in Maryland.

MISSING JAHI TURNER Light-skinned African-American 30 pounds, 30 inches tall Black hair Wearing blue "Winnie the Pooh" T-shirt, blue pants, and gray tennis shoes INFORMATION SDPD Juvenile Hotline: (619) 744-9521 Tip Hotline: (619) 235-8477 Friends of Jahi Recovery Centre: (619) 266-3677 Download A Missing Flyer SOUND OFF Share Your Thoughts

Penny Thompson of Frederick, Md., "completely ceased all operations" at the Jahi Recovery Centre on Monday, search volunteer Carl Davis told the San Diego Union-Tribune. "Everything has pretty much been shut down."

Officials at the Tubman Chavez Cultural Arts Center, where the search center had been based, confirmed the group had stopped its operations in the building in the Encanto neighborhood, the newspaper reported. The Jahi center's phone and fax numbers were disconnected Wednesday.

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Grandmother Says She Doesn't Want To Leave

Davis said he spoke with Thompson (pictured, right) on Tuesday night. "She just expressed a great deal of frustration. She feels she didn't get enough support financially," Davis said.

Jahi was reported missing on April 25.

Tieray Jones, 23, told police he left his stepson at a playground near the boy's home at Beech and 28th streets, with a woman and two other children while he walked a few hundred yards to buy a soda from a vending machine.

When the 23-year-old returned, his stepson was gone, along with the others, the man reported.

San Diego police have declined to address reports that Jahi apparently was not where his stepfather said he was the day he went missing, or that Jones failed a lie detector test.

Jahi's disappearance led to an intensive law enforcement probe and a grassroots search involving hundreds of volunteers.

About four weeks ago, investigators wrapped up a week's worth of nonstop digging at a Miramar-area landfill for clues into Jahi's whereabouts.

The exhaustive operation centered on a 5,000-ton mountain of refuse collected from the neighborhood where the boy's family lives.

Officials have declined to disclose what they found or to say what led to the search, which involved scores of detectives and hundreds of military volunteers.

Jahi is a light-skinned African American, 30 inches tall, weighing about 30 pounds. At the time of his disappearance, he was wearing a blue long-sleeve Winnie the Pooh T-shirt, blue nylon pants with an orange drawstring and gray Michael Jordan tennis shoes, according to his stepfather.

Police urged anyone with information about the boy's whereabouts to call the SDPD's Central Division "juvenile hotline" at (619) 744-9521, or San Diego County Crime Stoppers' anonymous tip service at (619) 235-8477.