When one is suspected of having committed a crime, law enforcement takes them into custody by arresting them.
The exact process varies between countries, but it typically sees police officers place a suspect in handcuffs and taking them either to be detained or interrogated.
An arrest is also often marked on a permanent legal record, though there are legal processes through which this can be expunged.
The imprisonment of Valizadeh was acknowledged to the Associated Press by the US State Department.
Opposition head Yair Lapid and National Unity Party head Benny Gantz have placed the blame for the leak of the documents fully on the prime minister.
Next week there will be a hearing on Meir's case in the Rhodes court.
A European arrest warrant has been issued against him on behalf of Romania on accusations related to participation in a criminal organization, a police official said on condition of anonymity.
The arrests were part of a large-scale operation carried out throughout the country and in conjunction with various border police units.
A spokesperson for the US State Department said "a US military member" had been detained in Venezuela.
They were under questioning for several hours by police and waved pictures of Yuli Edelstein.
Pakistani police detained several lawmakers from Imran Khan's party after a major rally demanding his release led to clashes.
Sunday and Monday, which saw some of the largest protests over the course of the week, also had the most arrests. Some 45 people were arrested on Sunday and 40 were arrested Monday.
UKLFI stated on their website that Khan is "breaching these rules by misleading the Court" and accused the prosecutor of "failing to update and correct information previously provided."