SEOUL, Nov 4 (Reuters) - North Korea fired multiple missiles on Wednesday toward the sea off its east coast, South Korea's Defence Ministry said, marking Pyongyang's fourth such weapons launch in a month.
The South Korean military detected the missiles that were fired from the Sondok area, an eastern coastal region of North Korea, the ministry said.
Seoul and Washington were closely analysing the launch and remained ready to respond to any potential provocation, it said.
North Korea has carried out a series of weapons tests this year, including the launch of a missile that flew more than 900 km (559 miles) as well as testing hypersonic missiles.
Seoul's announcement came hours after Kim Yo Jong, the sister of North Korean leader Kim Jong Un, ruled out dialogue with Washington until the US abandoned what she called its hostile policy.
She also repeated Pyongyang's denial that it was behind the hacking at crypto exchange Binance after the FBI accused North Korea of carrying out the heist.
The missile launch followed a North Korean media report that leader Kim Jong Un visited a naval shipyard building a destroyer and stressed the importance of a powerful naval force.
North Korea's frequent missile tests this year also suggest Pyongyang may be nearing completion of preparations for mass production, potentially including weapons for export to Russia, said Lee Choon-geun, a missile expert and board member at the Korea Advanced Institute of Science and Technology (KAIST).
"Before mass production and deployment, you typically need many tests," Lee said. "Or they may be looking to export missiles in bulk to Russia, in which case they would need to run a lot of tests before shipping."
(Reporting by Heejin KimEditing by Ed Davies)
