There is “no doubt” the U.S. engages in industrial espionage, Edward Snowden said in an interview in which he also asserted that he worked alone in disclosing mass surveillance by the National Security Agency.

The former U.S. government contractor, now a fugitive in Russia, told a German television station that if a company such as Germany’s Siemens AG were found to have information useful to the U.S. government, the NSA would use it, he said.