MARSHALL, Mich. (WZZM) -- A private investigator looking into the disappearance of two West Michigan women is hoping for new tips in both cases. The first is Mary Denise Lands, who disappeared in March of 2004. There is a person of interest in the case, but her body still hasn't been found. The other is Teleka Patrick, a young doctor who went missing from Kalamazoo in December.

In a vigil held every year for Lands who's been missing for 10 years, private investigator Jim Carlin also asks for answers in another case. 30 year old Teleka Patrick vanished December 5, 2013. "She was upset, she left town, she was scared," Carlin said.

Patrick, a psychiatric intern at Borgess Medical Center, was last seen at a hotel in Downtown Kalamazoo. She didn't have enough cash to to get a room so she took a shuttle back to her car, parked at work. From there, she drove 110 miles to Portage, Indiana.

Unlike the Mary Lands case, there is no known person of interest, but Carlin says that there are people involved in the Patrick case that should be looked at more closely. He says Marvin Sapp and his church haven't been open enough about what they know about Patrick.

Before her disappearance, Sapp filed a personal protection order against her saying she was stalking him. He says she contacted him hundreds of times, but he never responded. Twice authorities have publicly said Sapp was not involved.

RELATED: Authorities: Marvin Sapp not a suspect in Teleka Patrick disappearance

"The pastor is nothing more than an innocent victim of an apparent stalking, he has been thoroughly cooperative. I will say he is not a suspect in her disappearance," said Kalamazoo County Sheriff Richard Fuller.

But Carlin has a different opinion. "I don't agree with Sheriff Fuller, he knows more than I do, but the relationship with the church she was trying to become a member of, I think there is more to that. I hope police are looking at alternatives."

It's been just over three months and still no sign of Teleka. Carlin says one positive is that the Teleka Patrick case is getting national attention and he's still hopeful she'll be found alive.

Mary Denise Lands disappeared from her home in Marshall back in 2004. Many believe that she was a victim of domestic violence. There is a person of interest in the case but he has never been charged in her death. A friend of Land's says she hopes someone comes forward with new information.

"Somebody knows what went on, they know where she's at. They can make a phone call and bring her home, they can clear their conscience," said Ronda Lautzenheiser.

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