A spokesman for AT&T said the firm would make no comment on the report. DirecTV did not immediately respond to a request for comment.
AT&T has been in active discussions to buy DirecTV for nearly $50 billion, or low to mid-$90s per share, and has been working to finalize a deal in the next few weeks, Reuters reported last Monday.
Citing a source close to DirecTV, Buzzfeed.com said that DirecTV chief executive Mike White has told senior executives a deal had been reached and would be announced Sunday.
Reuters reported this week that AT&T was working with investment bank Lazard Ltd in talks for a potential takeover of DirecTV.