A Canadian newspaper has apologised for a reporter's outburst on social networking site Twitter.
Financial Post reporter David George-Cosh replied to April Dunford, a marketing executive, who tweeted her frustration after a phone call with him but did not name him.
He swore at her and said, "U don't look as nice as u put on."
The newspaper's editor posted an apology for the exchange, saying George-Cosh responded "unprofessionally".
It said, "While the remarks were made on the reporter's personal Twitter account, the conversation first began when the reporter was acting in his capacity as a reporter for the Financial Post.
"We hold, and will continue to hold - all our reporters to a higher standard in how they address anyone, in any forum. We apologize for the reporter's conduct."
The incident demonstrates the continued blurring of the line between private and professional lives, as personal accounts on social networking sites are increasingly used for professional purposes.