The body was discovered near East 62nd Street and East Drive, officials said. View Full Caption DNAinfo/Trevor Kapp

MANHATTAN — A woman was found dead in Central Park Thursday morning, police said.

The unidentified woman was found lying on a grassy hill with trees near East 62nd Street and East Drive about 6:15 a.m., NYPD officials said. She was pronounced dead at the scene.

It wasn't immediately clear how the woman died.

Investigators found pills near the body, but they don't know if they played any role in her death, police said. Her body showed no obvious signs of trauma.

She was wearing a light blue shirt, black pants and white sneakers, a witness said.

"I didn't see any blood," said Karen Marie, 31. "EMS came and said, 'Miss, miss.' They moved her arms, but she was completely stiff."

The Medical Examiner will determine her cause of death.

"It's sad. You think someone's life came to an end here. You have to pause and reflect on that person. Hopefully she died of natural causes," said Mike Weiss, 61, a Long Island high school teacher visiting the city for a few days.

The woman's death marks the fourth body found in the park since May 9, when a decomposed man was pulled from the Reservoir, officials said.

The next day, Anthony McAfee was found dead in Swan Lake, officials said.

Then on June 12, a man's body was pulled from the Conservatory Pond, officials said.

"This is crazy. It's a lot of bodies in one year. The cops are here once a month," said Lionel Pearlo, 34, who works in the park.