South Korea has issued an arrest warrant against suspended president Yoon Suk Yeol over his attempt to impose martial law on 3 December.

According to media reports Yoon is being investigated for abuse of power and inciting an insurrection.

His legal team has called the warrant “illegal and invalid” and plans to challenge it in court. Yoon is South Korea’s first sitting president to face arrest.

Investigators have until 6 January to execute the warrant, but may be thwarted by his security team and protesters.

Yoon’s legal team claims that declaring martial law is within his constitutional authority.

He has been suspended from presidential duties since 14 December after lawmakers voted to impeach him.

The opposition has voted to impeach Han, who stepped in as acting leader after Yoon was suspended, and finance minister Choi Sang-mok, who currently serves as both acting president and prime minister.