(CNN) It's been almost three months since Kelsey Berreth's toddler has seen her mom. Three months since anyone has seen the Colorado mother alive. Now, Berreth's parents have updated a wrongful death lawsuit against Frazee, saying a custody dispute was likely a "motive to kill Kelsey." "Upon information and belief, Frazee had motive to kill Kelsey in that he wanted full custody of [their daughter] KB and/or Kelsey to leave KB with him and Kelsey would not agree," said the amendment, filed in a US district court on Friday. The amendment was made to a January wrongful death lawsuit filed by Cheryl-Lee Ellen Berreth and Darrell Lynn Berreth.

Source: CNN February 17, 2019 20:26 UTC