** U.S.-listed shares of Chinese e-commerce group JD.Com
JD.O fall 3% to $25.18 premarket
** JD says its unit Dada Nexus DADA.O has identified
"certain suspicious practices" in an internal audit that may
cast doubt on the unit's online advertising, marketing services
revenues and operation costs
** Dada says an estimate of about 500 mln yuan ($70 mln) of
rev from online advertising and marketing services may have been
overstated for the first three quarters of 2023
** Separately, brokerage Citigroup on Monday downgraded DADA
to "sell" from "buy", citing an uncertain outlook following the
audit; DADA shares fell over 45% on Monday
** JD's Hong Kong shares ended down over 3%; DADA shares
were up 5.57% at $1.8 in U.S. premarket trade
** JD set to fall for fourth straight session if losses hold
** JD's U.S. shares fell close to 50% in 2023, while DADA
lost over 50%
(Reporting by Shashwat Chauhan in Bengaluru)
((Shashwat.Chauhan@thomsonreuters.com;))