Phoenix police searching for mother of dead baby found in McAllen

Police believe it'll be extremely difficult to find out who placed a dead baby girl in a donation box in metropolitan Phoenix.

The child was discovered Thursday in McAllen, Texas, as workers sorted through clothing shipped from Arizona.

Phoenix police spokesman Sgt. Steve Martos says investigators are waiting to hear from officials in Texas whether the baby was born alive or stillborn.

The child was apparently wrapped in a towel, placed in a cardboard box and left in one of nearly 400 donation boxes scattered across the region between Dec. 8 and Dec. 12.

The collected clothing and household items were sorted in Phoenix and left for Texas on Monday, arriving two days later.

Martos said Friday that detectives will likely need a tip to solve the case.