They found the body of a Reading High School student, identified as David Arango, on a baseball field in the 1000 block of Scott Street in the city's Oakbrook neighborhood around 6:40.
Police, the coroner, and the district attorney responded to the scene and cordoned off a large area around the 18-year-old's body for their investigation, while curious neighbors came out of their home to watch.
"There's a sidewalk and there's an embankment that goes down onto the baseball field," said Capt. Fran Drexler, Reading Police Department. "There's some possible blood stains from the top of the bank to the bottom of the bank where the body was found. He could have rolled down the bank. We don't know."
Police said it appears Arango, who lived nearby in the 700 block of Summit Chase Drive, suffered a head wound, but they have not been able to figure out yet how or when it happened.
"Wouldn't surprise me if it was from last night," said Drexler. "When you find a body that could possibly have been there through the night, it just makes it [the investigation] much more difficult."
An autopsy will be done this evening to determine the victim's exact cause and manner of death.
In the meantime, authorities are investigating his death as a homicide.
"They do have a lot of cameras over there," said Drexler. "We're already in the process of pulling any possible videos that would help us."
Information from: WFMZ-TV