Texas police investigating after mom, 4 kids planning move to Mich. go missing

(CBS/WWMT) KALAMAZOO, Mich. - Police are searching for a woman and her four children who went missing two weeks ago as they were planning to move from Texas to Michigan.

According to CBS affiliate WWMT, Katrina Hernandez's brother says the last time he heard from his sister was March 5, as she drove from Dallas to Fort Worth to buy a car she found on Craigslist. She was carrying $4,800 in cash with her, Kenny Gordon says.

No one has seen Hernandez since then, and her children, ages 4 to 12, have reportedly not been to school in almost two weeks. Gordon says calls to Hernandez' cell phone go straight to voicemail.

"I'm hoping and praying for the best, but I am thinking the worst," Gordon told WWMT.

WOOD-TV reports that Hernandez and her children were supposed to arrive in Kalamazoo, Mich., on March 7.

Police have investigated the Craigslist angle but say they've found nothing so far, WOOD-TV reports. Authorities also questioned Hernandez's boyfriend, whom she argued with over the phone around the time Gordon last heard from her, but say he has been cleared of any suspicion. Hernandez reportedly has an ex-husband living in Mexico, but there is no indication she was headed in that direction.

Hernandez was reportedly traveling to the Craigslist purchase with an unknown friend.