UPDATE: Nyame Ra has been located in good condition. Stay with NBC10 for more on this developing story.
A Philadelphia mother has not seen her 6-year-old son since Wednesday night when she gave her teenage son permission to take his brother to nearby Clark Park in West Philly.
Tamir Greenfield took his younger brother, Nyame Ra, from the boy's home near 49th Street and Woodland Avenue to the park -- located only six blocks away -- around 7:30 p.m. Wednesday, police said.
Their mother called Greenfield on his cell phone only 20 minutes after they left the home, but the teen didn't answer, according to the boys' grandmother.
The mom then went searching for the pair at Clark Park, but couldn't find them, family members said.
She continued to call Greenfield -- who picked up just once, only to hang up the phone moments later, relatives said.
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Authorities tracked down Greenfield Thursday morning at 36th and Market Streets in University City -- more than eight hours after a missing persons report was filed for Nyame.
Police are interviewing the teen, who his grandmother said recently began exhibiting odd behavior.
Their grandmother said it is not unusual for the teen to take his brother to parks.
Nyame is described as 4-feet tall, approximately 43 pounds, with a thin build, according to investigators. He is missing a front tooth, and has brown eyes, a medium brown complexion and close-cut black hair, authorities said. He was last seen wearing a blue hooded sweat shirt over a blue shirt, tan pants and gray Addidas sneakers with red stripes.
Anyone with information is urged to contact Southwest Detectives at 215-686-3388 or call 911.
