Police said Thursday they are “at a standstill” in the search for a 14-year-old Ohio boy who reportedly vanished while walking to school on December 20.

Port Clinton police Chief Rob Hickman said during a press conference that police were working a few leads in their missing persons investigation involving Harley Dilly. Dilly reportedly disappeared while walking to school on Friday at around 7 a.m.

Police said they have no reason to believe Dilly was abducted. They also said they discovered nothing suspicious at the missing teen’s home. WTVG reported that authorities declined to reveal whether Dilly was being bullied at school, or if he was diagnosed with any mental or behavioral issues.

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According to the Toledo Blade, Port Clinton police released a surveillance still which presumably shows Dilly in an area between his residence on East 5th Street and Port Clinton high and middle school campus between 6 and 7 a.m. on Friday.

Hickman said police have been called to Dilly’s home in the past but declined to disclose additional details. However, he did mention that the teen has left home during disputes and returned the following morning.

WJW reported that Dilly’s father reported him missing at around midnight on December 21. Police said they also found no sign of the teen at his sister’s home, which is located in a different state.

Dilly recently broke his phone, possibly explaining why his family was not concerned about not hearing from him until hours later.

In addition to an aerial search, local and state agencies are reportedly using tracker and cadaver dogs to comb a 150-acre radius.

With limited leads, a $4,000 reward is being offered for the teen’s safe return.

Dilly was described as being 4 feet, 9 inches tall, weighing 100 pounds, and having brown hair and green eyes. He was reportedly last seen wearing glasses, gray sweatpants, a maroon puffy jacket, and black tennis shoes.

The police chief advised against approaching Dilly if he is spotted, as the teen”does not warm up to people” easily. Anyone with information regarding Harley Dilly’s whereabouts should call Port Clinton Police at 419-734-3121.

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[Featured image: Harley Dilly/Port Clinton Police Department]