North Korea has fired an “unidentified projectile” into the Sea of Japan, Seoul’s Joint Chiefs of Staff said. The suspected ballistic missile, fired off the country’s east coast, reportedly flew over the Korean territory and fell into the sea.

The “projectile” was launched early Monday morning at 7:36 am local time from the Dongchang-ri long-range missile site, Yonhap news reports, citing S. Korea’s military.

The unidentified projectile object flew across the country before splashing into the East Sea.