dec 14 reuters  london copper fell to a oneweek low on tuesday pressured by concerns over the impact of the omicron variant and rising stockpiles while a firmer dollar made the greenbackdenominated commodity more expensive for holders of other currencies threemonth copper on the london metal exchange was down 04 to 9411 a tonne as of 0250 gmt earlier in the session prices fell to their lowest level since dec 6 at 9398 the mosttraded january copper contract on the shanghai futures exchange slipped 11 to 68660 yuan 1078508 a tonne having earlier fallen to its lowest level since nov 19 at 68510 yuan mainland china detected first case of the omicron variant in the port city of tianjin meanwhile major chinese manufacturing province zhejiang is fighting its first covid19 cluster this year with more than a dozen chineselisted companies suspending production due to tightened covid19 curbs read more onwarrant lme inventories rose to 80350 tonnes their highest in more than two months with lme cash copper on the threemonth contract flipping to a discount of 1250 a tonne first time since sept 17 the dollar index hovered near a oneweek high touched in the previous session denting the greenbackdenominated metals appeal attention was also on the us federal reserves twoday policy meeting due to start later in the day where the central bank is expected to announce that it will accelerate the end of its bondbuying programme in order to clear the way to lift off interest rates read more  lme aluminium eased 02 to 26485 a tonne zinc was flat at 33245 nickel fell 09 to 19540 a tonne and lead was down 07 to 2282 a tonne  shfe aluminium rose 14 to 19150 yuan a tonne nickel fell 18 to 142210 yuan a tonne lead eased 04 to 15640 yuan a tonne and tin was up 05 at 285730 yuan a tonne  for the top stories in metals and other news click  asian stocks and oil prices slipped on tuesday as the spread of the omicron coronavirus variant rattled investors who were already on edge ahead of a slew of central bank decisions this week including a key federal reserve meeting us federal reserves federal open market committee starts its twoday meeting on interest rates reporting by eileen soreng in bengaluru editing by sherry jacobphillips