This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

HOWARD BEACH, Queens — Authorities pleaded for help Thursday as they investigate the slaying of a jogger in Queens, whose strangled body was found in a marsh with evidence that she’d been sexually assaulted by a killer who has yet to be caught.

“We really need the public’s help on this one,” Mayor Bill de Blasio said at a news conference to reveal the city’s latest crime statistics. “Anyone who knows something needs to call it into the police right away.”

Chief of Detectives Robert Boyce called the case “extraordinarily unusual,” considering that it happened during daylight hours, in public and in a tight-knit community.

That Karina Vetrano’s body was found in a secluded area of Spring Creek Park has been a hurdle for investigators, who have received a paltry three Crime Stoppers tips that are all “generic,” Boyce said, adding that he hopes someone saw something at the entrance to the park that could help them solve the case.

Because of the lack of tips, authorities have raised the reward offered for information that leads to an arrest to $10,000.

A self-described “thrill seeker” and “day dreamer,” Vetrano, 30, went missing after she went on a solo run about 5 p.m. Tuesday, police said.

Hours later, her father, a retired FDNY official, set out with a search party and, along with police, ultimately discovered his daughter’s body, 15 feet off the jogging path. A used condom was found nearby and one of her shoes was missing, a police source said.

There’s no evidence she knew her attacker, officials said.

Vetrano was beaten “quite severely,” suggesting she put up a “ferocious fight,” Boyce said.

The medical examiner determined strangulation to be the cause of death.

Investigators remained in that marshy area of the park Thursday afternoon and Boyce said he expects them to be there for several more days searching for clues.

“We plan to chop down just about every weed in that area,” Boyce said.

The tallest of those weeds soar 15 feet above the ground. Residents said they’ve been complaining to the city and local parks department about the vegetation. But it’s the responsibility of the National Parks Department and that agency said the land is untouchable.

The next step is to construct a DNA profile from the forensic evidence found at the scene and run it through a local database. If that doesn’t produce an idea of who police are looking for, the DNA will be sent to outside labs to create a clearer picture, Boyce said.

Among the evidence is Vetrano’s cellphone, which shows that her father had called asking where she was and that she’d been texting back and forth with her friend while running.

Investigators said the wooded area houses multiple homeless  wooded area but inhabitants there have been ruled out as possible suspects. Now, they’re scouring the local sex offender registry and looking into surveillance video from the neighborhood.

Anyone with information in the case is urged to call NYPD’s anonymous Crime Stoppers hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).

PIX11 News’ Dan Mannarino and Jay Dow contributed to this report.