German leaders said they are exploring the possibility that a fiery cargo plane crash in Lithuania on Monday was the result of sabotage or hybrid warfare.

A team of Lithuanian investigators recovered the black boxes from Monday's deadly cargo plane crash, as they began their probe into what caused the aircraft to go down and worked to clear the crash site.

One person died in the incident, which came months after people alleged to have been working for Russian intelligence services used the company to ship incendiary devices.