Investigators Receive Over 500 Tips On Princeton Murder

PRINCETON (CBS) -- More than 500 tips have poured in to the Massachusetts State Police tipline after Vanessa Marcotte was found murdered Sunday in Princeton.

Marcotte went missing Sunday after she went out for a walk. Her body was found several hours later in the area of Brooks Station Road.

As of Friday, investigators received 500 tips through the hotline, according to the Massachusetts State Police.

Investigators have determined that Marcotte's killer was a man and he likely suffered scrapes, bruises and scratches during a struggle, Worcester District Attorney Joseph Early said during a press conference on Thursday.

Authorities are hoping more people will come forward with information on any males anyone may have noticed with similar injuries earlier in the week. Authorities are also asking anyone who may have noticed any vehicles -- moving or parked -- on Brooks Station Road between 1 to 3 pm on August 7.

No arrests have been made in Marcotte's death.