North Korea's foreign minister said the country may test a hydrogen bomb in the Pacific ocean, according to South Korean media reports.
The news comes after President Trump announced increased economic sanctions against the country on Thursday.
North Korean leader Kim Jong Um responded by calling President Trump a "mentally deranged dotard" and threatened to "tame (Trump) with fire" for his comments.
"The mentally deranged behavior of the U.S. president openly expressing on the UN arena the unethical will to 'totally destroy' a sovereign state, beyond the boundary of threats of regime change or overturn of social system, makes even those with normal thinking faculty think about discretion and composure," Kim said in a statement released on North Korean media.
This story is developing and will continue to be updated.
USA Today and the Associated Press contributed to this report.