May 1 (Reuters) - There was a threat of missile strikes in the early hours of Monday in the Kyiv region, local authorities said, after air raid alerts were issued throughout all of Ukraine by emergency services.

"The threat of a missile strike!" Kyiv's regional administration wrote on the Telegram messaging app. "Stay in shelters."

Andriy Yermak, head of President Volodymyr Zelenskiy's office, said on the Telegram messaging app, "Take care of your safety, do not publicise the work of air defence." (Reporting by Lidia Kelly in Melbourne; Editing by Christian Schmollinger)