Police officers drew their guns when they arrested a man involved in attacks on the ruling Liberal Democratic Party's headquarters and the Prime Minister's Office in Tokyo last weekend, according to media reports on Tuesday.

The suspect, Atsunobu Usuda, set his minivan — which had 16 plastic containers of gasoline — ablaze in front of the Prime Minister's Office on Saturday.

The 49-year-old man from Kawaguchi, Saitama Prefecture, was arrested on the spot on suspicion of obstructing public duties.