** Shares of ALS ALQ.AX fall as much as 2.6% to A$20.91
** Technical services provider said unauthorised third-party access to parts of its IT systems caused 'temporary disruption' to some operations
** Says most services restored, working with clients, authorities and regulators to assess any data impact
** Co did not provide any timeline or details on when the incident happened
** YTD, stock down 5%, including the day's moves
(Reporting by Shivangi Lahiri in Bengaluru)
((shivangi.lahiri@thomsonreuters.com))