LONDON — Prosecutors concluded a two-day interview with WikiLeaks founder Julian Assange on Tuesday as part of an inquiry to determine whether to charge him with a possible sex crime dating back six years.

No decision on a possible prosecution was made public after the questioning and prosecutors didn’t comment on the substance of the interview, which took place at the Ecuadorean Embassy in London where Assange sought refuge more than four years ago.

Ecuadorean prosecutors are focusing on an allegation of possible rape dating back to an incident in Sweden in 2010. Assange hasn’t been indicted and denies wrongdoing.

Swedish prosecutors will weigh his version of events before deciding whether to charge him with a crime. They will first receive a written report from Ecuadorean officials.

The investigation began after two women Assange met in Sweden complained to authorities about his behavior.

Officials said they would seek a DNA sample from Assange.