The results of DNA testing to confirm it was Heeringa's blood were returned from the Michigan State Police Crime Laboratory today.
Heeringa, 25, was abducted late on April 26 when she was preparing to close the Exxon station and store at 1196 E. Sternberg Road in Norton Shores. She was working alone and there were no surveillance cameras at the time.
Norton Shores Police Chief Dan Shaw said Heeringa’s family has been notified of the blood identification.
Shaw said information on the location of the small amount of blood found outside the station will not be released.
A task force has been working on the case to investigate the hundreds of tips and leads that have come in. A search of Harbor Island in Grand Haven was conducted on Tuesday, based on one of those tips, but Shaw said nothing was found.
Heeringa’s family continues to operate a volunteer command station at The Pointes shopping plaza, adjacent to the gas station where the missing woman had worked for more than a year. The family is handing out fliers with information about the case to help find her.
A volunteer has also established a Find Jessica Heeringa Facebook page and a fund to help pay the family's expenses has been established at PNC Bank.
A reward fund has been set up through the Community Foundation for Muskegon County. The Exxon Mobil Corp. has donated $15,000 to the reward fund.
Police continue to seek a man driving a silver minivan seen at the gas station that night. A sketch of the man was released last week.
Anyone with information about the case is asked to call the Norton Shores Police Department at 231-733-2691 or Silent Observer at 231-72-CRIME.