Police seek arrest warrant for Seoul arson suspect after attacks injured 19.
Context
What happened: Police sought a formal arrest warrant for a man suspected of arson resulting in injury after fires at two buildings in Seoul's Gangnam district on Tuesday.
Key numbers: 19 people injured, one in cardiac arrest. Fires set at two buildings. Suspect bought two jerrycans, a lighter and flammable material on Friday.
Why it matters: The suspect told investigators the patent firms had defrauded him with fake patent registration certificates, and that he wanted to scare them and let the world know.