Judge Ghada Aoun’s move came a day after she said that a police force prevented members of the State Security Service from bringing the Governor of the Banque du Liban, Riad Salameh, from his home, for questioning.
On Tuesday, Aoun said that she had sent an official letter to the Director General of the Internal Security Forces, Major General Imad Othman, requesting clarification on the incident. She added that resisting the authorities and preventing the implementation of a judicial order, as Othman did, is a crime.
It was not immediately clear whether Othman would appear for questioning before a Lebanese judge next week.
A Lebanese anti-corruption group has filed a lawsuit against Salameh, accused of corruption and dereliction of duty during Lebanon’s unprecedented economic collapse.
The national currency depreciated, foreign reserves dwindled, and the heavily indebted government was unable to agree on a plan for economic recovery.
Salameh is also under investigation by several countries, including Switzerland, Luxembourg and France, for possible involvement in money laundering and embezzlement.
The division between the internal security forces and state security reflects competition between state politicians.
Othman is considered close to former Lebanese Prime Minister Saad Hariri, who announced his departure from the political arena last month, and was one of the most prominent opponents of President Michel Aoun, who supports the head of the state security apparatus.