UPDATE 1-Mexican president Lopez Obrador tests postive for COVID-19

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MEXICO CITY, Jan 24 (Reuters) - Mexican President Andres Manuel Lopez Obrador has tested positive for COVID-19, he said on Sunday, adding that his symptoms were light and that he was receiving medical treatment.

Mexico is in the grip of a second wave of the pandemic, with the country's official death toll from COVID-19 set to pass a grim milestone of 150,000 in coming days.

"As always, I am optimistic," Lopez Obrador, 67, said in a tweet. (Reporting by Mexico City Newsroom; Editing by Michael Perry)