An environmentalist briefly interrupted Republican presidential candidate Mitt Romney during a campaign rally Thursday in Virginia.

The protester shouted "what about climate change, that's what caused this monster storm" before being drown out by boos from Romney supporters. The unidentified heckler held up a banner that read "End Climate Silence." He was quickly escorted out of the audience.

As governor of Massachusetts, Romney had worked to reduce greenhouse gas emissions, which scientists have pinpointed as a major cause of climate change.

But Romney has been dismissive of the issue during his presidential campaign. In his nomination speech at the Republican Nation Convention, Romney mocked Obama for promising to "slow the rise of the oceans and to heal the planet."

Though climate change was not mentioned during this year's presidential debates, it has become a campaign issue in the wake of the devastation caused by Hurricane Sandy.

Watch video, courtesy of ABC News, below: