If you've visited the Bossier City Police Department recently, you might have noticed the bulletin board that contains flyers of cold cases.

There are four unsolved cases in Bossier -- two of them involving missing people, and the other two homicides where no suspects have been identified or located.

On November 4, 2000, Connie McKenzie was found murdered inside the old Taco Bell restaurant in the 4100 block of Barksdale Boulevard, where she was employed. It's believed she was killed the previous night after the restaurant had closed for the day.

In a story published last year by KTBS-TV, years after McKenzie was killed, two people who worked at the same Taco Bell were murdered. Robert Cole was convicted of killing his pregnant wife, Theresa Cole, in 2008 and her co-worker, Chris Pierce, in 2003. Pierce's remains were found buried in the Red River with his truck, but police never connected McKenzie's murder to those two. A few years after McKenzie was killed, her husband left town.

On September 26, 2002, 37-year-old Carrie Walker Poole's body was found inside a storage room located below a garage apartment in the 2300 block of Broadway Drive, where she lived. Her death was ruled a homicide. Officers checked the residence after a friend and co-worker called police when Poole didn't show up to work.

The house is no longer there. A Snappy Scrubs car wash now sits where the home used to be. Poole's estranged husband was a person of interest in her murder, but he hasn't been cooperating with authorities.

Two people also remain missing, more than a decade later. One missing persons case is coming up on its 25th anniversary.

Penelope "Penny" Madanat of Bossier City was last seen leaving Cowboy's (now the shut-down Rockin' Rodeo) nightclub on Gould Drive on October 26, 1991. She was 23 at the time of her disappearance.

She's a white female, 5'7" and 128 pounds with auburn hair and blue eyes. She wore braces on her teeth and had a birthmark on her left arm, and a small mole above her lip on the right side.

According to a story on the website charleyproject.org, Penelope had been involved in an argument with her estranged husband Eddie the night she disappeared. He's since moved to Jordan with the couple's two children.

The article also says a phychic believed Penelope had been beaten and strangled to death, and that her body was buried about 40 miles south of Bossier City. However, her remains were never found.

Darrell Mack Wells was last seen at around 2 a.m. December 26, 2001, when he left his parents' house in his 1982 Chevy pick-up truck. He was 30 years old at the time.

The truck was recovered January 1 in the parking lot of Johnson's Furniture Store on Westgate Drive. Bossier City spokesman Mark Natale told KEEL News authorities searched the area near the Red River via helicopter, but could not locate Wells' body.

Wells is 5'10" tall and 160 pounds with brown hair and blue eyes.

If you can help with information in any of these cases, call Bossier Crime Stoppers at (318) 424-4100, or submit a web or text tip.