noun, noun or participle which takes 'suru', transitive verb
pressing someone on a matter; pursuing responsibility; questioning closely
Used when someone is pressed hard about responsibility, guilt, contradictions, or wrongdoing. Often takes objects such as 責任, 疑惑, 矛盾, and 罪.
野党は大臣の責任を厳しく追及した。
The opposition harshly pressed the minister on his responsibility.
記者は説
The reporter pressed him on the contradictions in his explanation.
noun, noun or participle which takes 'suru', transitive verb
catching up; overtaking
A much less common literal use meaning to pursue and catch up with someone or something. In ordinary modern Japanese, 追いつく or 追い越す is usually clearer.
「先発隊を追及する」という表現では、追いかけて追いつくという意味になる。
In the expression “追及する the advance party,” it means to chase after and catch up with them.