Here's what we know: 

Where did the test occur? 

The U.S. and South Korea's military said Sunday's missile was launched from Sinpo, on North Korea's east coast.

"The North attempted to launch an unidentified missile from near the Sinpo region this morning but it is suspected to have failed," the South's Office of the Joint Chiefs of Staff said in a statement.

Sinpo is roughly 182 miles from Seoul, South Korea.

The Pentagon and South Korea's Joint Chiefs of Staff said it wasn’t immediately clear what type of missile was involved.

Why did the test occur? 

The test came one day after Saturday's North Korea military parade, which marked the 105th anniversary of the birth of regime founder Kim Il-Sung. Tens of thousands of North Korean soldiers goose-stepped and new missiles and other military hardware were wheeled out in a show of military strength and defiance during the celebratory parade in the capital of Pyongyang.

The timing also coincides with increasing tensions between the U.S. and North Korea. "Our toughest counteraction against the U.S. and its vassal forces will be taken in such a merciless manner as not to allow the aggressors to survive," a spokesperson for North Korea’s military said ahead of the parade, according to the state-run KCNA news agency.

Source: Usatoday