Donald Trump. Alex Wong/Getty Images

The former British spy behind the explosive dossier linking President Donald Trump to Russia is heading back to work.

Christopher Steele, a former MI6 agent, issued a brief statement on Tuesday morning saying he was returning to work at the London-based Orbis Intelligence.

"I'm really pleased to be back here working again at the Orbis's offices in London today," Steele told Press Association reporters, per The Independent, outside Orbis' office.

Steele continued:

"I'm now going to be focusing my efforts on supporting the broader interests of our company here. I'd like to say a warm thank you to everyone who sent me kind messages and support over the last few weeks. Just to add, I won't be making any further statements or comments at this time."

Key details within the dossier, which was originally compiled as political opposition research but eventually caught the attention of US intelligence agencies, have been corroborated by intelligence officials, though many of its claims remain unverified.

The FBI reached an agreement to pay Steele to continue his work in October, according to The Washington Post. Steele never received payment, however, as the dossier became the center of a media storm. Steele left his home and reportedly went into hiding in January after his name became public.

The White House has called the document "fake and fictitious."