The situations in which a direct arrest can be made without an arrest warrant by the law enforcement are listed in article 90/2 of the Code of Criminal Procedure and in article 5 of the Regulation on Arrest, Detention and Statement Taking. Accordingly, law enforcement officers

In cases where an arrest warrant or arrest warrant is issued and delays are harmful, they have the power to arrest if they cannot immediately apply to the Public Prosecutor or their superiors. (CMK art. 90/2)
In order for an arrest to be made without an arrest warrant by the law enforcement, the two conditions listed must be present together. In other words, in cases where an arrest warrant is issued or an arrest warrant is issued, law enforcement officers will be able to make arrests without an arrest warrant, if there is a problem in delay. Apart from this, the situations listed in the regulation are as follows;

Those who disobey the orders of the law enforcement and those who do not comply with the measures taken,
Persons who forcibly oppose the law enforcement authorities while on duty or to deprive them of their duties and are likely to continue their activities if they are not caught,
Those who buy, sell, possess or use drugs and stimulants,
Those who are drunk enough to disturb the public’s comfort or cause a disgrace, or who attack others while intoxicated,
Those who disturb the peace and tranquility of the people, those who continue their actions despite the warnings, those who attempt to attack others and fight,
Persons who are mentally ill, addicted to drugs and stimulants or alcohol, vagrants or who may transmit disease, who pose a danger to the society, in order to fulfill the measures taken in accordance with the principles specified by the laws for treatment, education and rehabilitation in an institution,
Children against whom the court has decided to place them in child care and orphanages or similar official or private institutions, or to be brought before the competent authority,
They can arrest people who want to enter or enter the country illegally, or for whom a deportation or extradition decision has been taken.