Oct 22 (Reuters) -Australian shares fell nearly 1% on Tuesday tracking weakness in global markets, with tech firm WiseTech Global and lithium miner Mineral Resources extending losses to be the top laggards on the benchmark index, following probes into their top executives.

The S&P/ASX 200 index .AXJO was down 0.9% at 8,267.5, as of 2337 GMT, with all sectors trading in the red. The benchmark rose 0.7% on Monday.

Global markets dropped overnight on caution amid rising geopolitical tensions and uncertainty about the U.S. presidential elections. MKTS/GLOB

The Dow Jones Industrial Average .DJI fell 0.80%, the S&P 500 .SPX lost 0.18%. The Nasdaq Composite .IXIC, however, gained 0.27%. .N

Local miners .AXMM slipped 1% despite strong metal prices. IRONORE/ MET/L

Mineral Resources MIN.AX fell nearly 4% to hit its lowest level since Sept. 24, after the lithium miner's billionaire founder admitted to tax evasion. The stock plunged nearly 14% on Monday.

Rio Tinto RIO.AX, BHP Group BHP.AX and Fortescue FMG.AX lost between 0.6% and 1.6%.

Technology stocks .AXIJ retreated 1.7%.

WiseTech Global WTC.AX fell 2.4%, extending Monday's sharp sell-off, as the country's biggest listed tech firm said it was reviewing matters concerning its CEO, after reports made allegations about his personal life including payments to a past sexual partner.

Financials .AXFJ fell about 1%, with all of the "big four" banks trading in the red.

Energy stocks .AXEJ slipped 0.5%. Viva Energy VEA.AX dropped as much as 4% to hit a more than one-and-a-half-year low after the fuel retailer flagged softening market conditions, lower tobacco sales and rising business costs to impact its commercial and industrial operations.

Hotel Property Investments HPI.AX rose as much as 3.7% after the pub owner said it had recommended its shareholders to reject the final takeover bid from a consortium led by Charter Hall Retail REIT CQR.AX, which valued it at A$755.8 million ($502.76 million), calling the proposal "opportunistic".

New Zealand's benchmark S&P/NZX 50 index .NZ50 fell 0.7% to 12,827.09.

($1 = 1.5033 Australian dollars)

Reporting by Echha Jain in Bengaluru; Editing by Rashmi Aich

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