Ethiopia broke off diplomatic relations with Qatar on Monday, saying the energy-rich Gulf state has become "a major source of instability in the Horn of Africa."

Wahide Belay, a spokesman for Ethiopia's Foreign Ministry, cited Qatar's relationship with archenemy Eritrea. He called Qatar a "good friend" of the neighboring Horn of Africa nation.

"Qatar has left no stone unturned to cause harm to Ethiopia's national security," the Foreign Ministry said in a statement. "All those who are prepared to foment instability in Ethiopia and undermine the country's security have been given support and encouragement by Qatar."

Qatar does not have an embassy in Ethiopia, and Belay said he was unaware of any aid from Qatar.

This is not Ethiopia's first diplomatic squabble.

In September, the government ordered the Norwegian Embassy to send home six of its nine diplomats. Ethiopian officials accused the Nordic nation of interfering in its ongoing border talks with Eritrea.

Norwegian officials say they were neutral participants in the talks.