JAKARTA, Feb 26 (Reuters) - Indonesia's meteorology agency issued a tsunami warning early on Tuesday morning after a strong earthquake struck off western Sumatra.

The agency said via a telephone text message that the quake measured 7.0 on the Richter scale. The epicentre was 171 km (106 miles) southwest of Painan, West Sumatra, at a depth of 27 km, it said.

At least two strong earthquakes struck the same area on Monday, triggering panic and a brief tsunami warning, although there were no immediate reports of damage.

A huge earthquake measuring more than 9 struck off Sumatra on Dec. 26, 2004, causing a massive tsunami and more than 230,000 deaths in countries around the region. (Reporting by Telly Nathalia, editing by Sara Webb)

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