AT&T Wireless

(AWE)

said former parent

AT&T Corp.

(T) - Get Report

has sold its remaining stake in the firm, about 91 million shares, at prevailing market prices.

AT&T spun off the company in July, at which time it owned about $3 billion in AT&T Wireless stock. AT&T has been on a debt-reduction campaign recently and expects the sale of its cable operations to

Comcast

(CMCSK)

announced last week to bring its total debt to less than $20 billion from $65 billion from the end of last year.

AT&T Wireless closed Monday at $13.29 a share, down 9 cents.