President of the European Commission Jose Manuel Barroso expressed his condolences on Tuesday to the casualties caused by an earthquake in New Zealand.

"The news and images of the terrible earthquake that has just hit New Zealand, particularly the city of Christchurch, have filled me with dismay and sadness," said Barroso in a message to New Zealand Prime Minister John Key.

"For the second time in less than a year, your country has been tragically struck by natural disaster. Our thoughts are with the families of the victims and with the men and women struggling to save those still entrapped in the rubble."

"Rest assured that the European Union stands ready to provide assistance if needed and to work with your government to give relief to the affected communities," Barroso said.

A 6.3-magnitude earthquake hit New Zealand South Island's largest city of Christchurch on Tuesday, leaving 65 people dead.