A new billboard campaign in Pinellas County aims to bring more attention to several cold cases in hopes of solving them.
Clear Channel Outdoor is donating seven billboards that will be used to highlight unsolved crimes over the next two months.
Law enforcement officers hope the billboards will generate more tips for Crime Stoppers, and that those tips will help provide closure to the loved ones of those who went missing or were killed.
"Our hope is that we are able to finally give your family some closure and bring some people to justice," said Deborah Martino, the coordinator for Crime Stoppers of Pinellas County.
Representatives from the Pinellas County Sheriff’s Office, Clearwater Police Department, St. Petersburg Police Department and Crime Stoppers of Pinellas County participated in Thursday's news conference.
The following cases will be featured on the billboards:
Gary Noordhoek, 38, was found shot to death at a warehouse on 126th Ave. N on June 28, 1996.
Noordhoek stayed in a room that was converted into an efficiency apartment in the warehouse, and his body was found by the warehouse's owner. His car, a green 1992 Infinity Q45, was stolen and later found at a Pinellas Park tow lot.
Noordhoek was last seen alive by friends while having dinner on June 25, 1996 in the area of Brandon Town Center.
Lynette Campbell, 35, was last seen alive by her mother on May 31, 1996. She was leaving the Tarpon Springs home she shared with her mother to visit a "new" boyfriend, Mark. Mark has not been identified by investigators at this time.
Witnesses say they saw her in the early morning hours of June 1 at the Bridge Lounge in Tarpon Springs. She was later reported missing by her mother on June 10.
Campbell's vehicle, a cream-colored 1997 Oldsmar Royale, was seen abandoned on June 7 and was later recovered on June 10 in a wooded area north of Anclote Road.
Her body was found on June 15 along the Anclote River. The cause of death was ruled as homicidal violence.
Melanie Landra Warren, 15, was killed in a drive-by shooting as she sat on the front porch of a friend's house on Jones Street in Clearwater on May 24, 1992. She attended Tarpon Springs High School where she was an honor student and stand-out basketball player.
The suspect vehicle is described as a white Lincoln Continental with a sky-blue vinyl top, possibly a 1978-1979 module. The vehicle has hub cap spokes, dark tinted windows and white wall tires with thin white stripes.
Investigators say they've developed several theories but none of them suggest any wrongdoing on the part of Melanie.
Zachary Michael-Cole Bernhardt, 8, was last seen on Sept. 11, 2000. His mother, Leah Hackett, said she went to the pool of their apartment complex on Drew Street in Clearwater at about 2 a.m. When she came back, her son was missing.
Zachary has a scar on the bridge of his nose, under his chin and on the upper right side of his lip. He is described as an intelligent and cheerful child who excelled in school.
Detectives conducted hundreds of interviews in an attempt to determine what happened to Zachary, but his disappearance remains unsolved.
Malayshia Gamble, 15, was found shot to death on Jan. 9, 2009. Malayshia, who was fully clothed, was found in a vacant field in the 800 block of Preston Avenue S.
Investigators believe someone in the neighborhood has information that can help solve her murder.
Tracy Lee Pulido, 42, was found dead on Aug. 18, 2013, in her bedroom at Fountain Court Apartments on 40th Street N in St. Petersburg. There were signs of a violent struggle in her living room.
The last time she was seen alive was Aug. 17, when she left her son at a friend's apartment. The friend called police when she failed to answer her phone to pick up her son.
Investigators believe she may have known her killer, who may live in the same area.
Paula Witthaus, 54, and James Rapp, 67, were found dead Jan. 28, 2014 in their home at 2840 17th Avenue N.
Investigators say there were no signs of forced entry. They also say there are no witnesses, suspects or evidence linking a suspect to the case. There have also been no tips leading to a suspect or a person of interest.
Anyone with information about any of these crimes is asked to call Crime Stoppers at 1-800-873-TIPS (8477) or report online at crimestoppersofpinellas.org. You can remain anonymous and be eligible for a $3,000 reward.