Police said some five burglars had broken into the house of Mandana Ismail Abeywickrema, a leading columnist in the English language 'Sunday Leader' newspaper.
The break-in at the house in Colombo south around 2 AM local time was met with police firing after police arrived at the scene upon being informed.
"They pointed a finger at me and demanded jewellery, I told them to take anything without doing any harm. Then they began looking for documents," Abeywickrema said.
Abeywickrema was elected the first President of the Journalists' Trade Union formed recently.
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There have been many cases of threats and intimidation of the Sunday Leader's journalists including an arson attack in the past.
The newspaper's editor Lasantha Wickrematunga was murdered when a gang attacked him in his car in January 2009.
The Sunday Leader is considered a major critic of the present government and media activists allege that is the reason it has been targeted and that journalists have been forced to self-censor their work for fear of violent attacks.