Investigators searching for a missing 14-year-old Ambler girl discovered a body hidden inside a plastic container outside a Whitpain Township home this afternoon.

Montgomery County First Assistant District Attorney Risa Vetri Ferman said this evening that the body may be the remains of the missing teenager, Ebony Nicole Dorsey, a freshman at Wissahickon High School.

"We do have some concerns that this could be Ebony," she said. Ferman said the clothing found on the body was consistent with what the girl was wearing when reported missing.

An autopsy will be performed tonight, she said.

Friends and family gathered in a vigil outside 1302 Union Meeting Road, where the body was found.

Dorsey, a freshman at Wissahickon High School, was last seen by her mother at 10:30 p.m. Thursday when the girl left to baby-sit for a family friend.

Earlier in the day, more than 75 police officers and fire fighters were searching for the teenager.

They are still seeking the man last seen with her.

Whitpain Police Chief Mark A. Smith described that man, Mark O'Donnell, 48, as a "person of interest," and said investigators want to question him further about the disappearance of Dorsey, a freshman at Wissahickon High School.

"We have reason to believe he could be involved," Ferman said.

She left her home Thursday night with O'Donnell to baby-sit for his 4-year-old daughter, Smith said. The girl did not show up at school on Friday, but was not reported missing by her mother until Friday evening.