North Korea rolled out what appeared to be a new type of solid fuel missile alongside the country’s largest-known intercontinental ballistic missile (ICBM) at a military parade on Monday, photos published by DPRK state media on Tuesday showed.

The new missile seemed to be a variation of North Korea’s Pukguksong solid-fueled missile series, analysts told NK News. 

“[The new missile] looks like one of the Pukguksong series, probably a Pukguksong-6,” said Ankit Panda, Stanton Senior Fellow in the Nuclear Policy Program at the Carnegie Endowment for International Peace. “We don’t have the name for it.”