1. If the bank cards involved in online gambling are frozen, they should actively cooperate with the case-handling organs to handle the case;

2. If the bank card is requested by the police to be frozen by the court, it is suspected that the bank card has something to do with online gambling. After the investigation is completed, if there are no other problems, the account will be unfrozen in time;

3. The Public Security Bureau needs to report to the court to freeze the relevant bank account involved in the case because of handling a case or judicial needs

4. The court sends a letter to the bank, and the bank replies and signs it to freeze the account according to regulations;

5. Generally, the freezing period is six months, which can be extended once according to the demand, usually for three to six months, and it is also possible to freeze the account permanently.

The types of bank card freezing are:

1. The bank card is a credit card (debit card). If it is frozen, it may be that there have been abnormal transactions in the credit card, such as malicious cashing, forged information, continuous password errors, etc., and the bank card may be frozen by the bank;

2. For overdrawn bank cards, the bank will set the overdraft share according to the actual repayment ability. When the overdraft exceeds the share, the bank will immediately freeze your bank card;

3. A bank card is a debit card. If it is frozen, it will be frozen in wrong account, which means that the bank mistakenly gives more money to the depositor's account when trading, so the bank may freeze the extra part. One is judicial freezing. According to the relevant provisions of the law, judicial organs can apply for frozen bank cards from banks for handling cases. At the same time, customs, tax authorities and other departments also have the right to freeze;

4. No matter what bank card it is, if the password is entered incorrectly for three consecutive times, the bank system will automatically lock the bank card password, which is similar to freezing, but not freezing. 24 hours will be automatically released later;

5. If the bank card fails to apply for a new card upon expiration, the bank will freeze your expired bank card after expiration;

6. If the bank card has been reported lost for many times in a row, it will be frozen because the bank thinks it is suspected of malicious loss reporting.

To sum up, if an organizer or helper is suspected of opening a casino, he shall be investigated for criminal responsibility. Suspected of gambling, the deposit is frozen, and the case-handling organ will check it. If it belongs to the proceeds of crime or gambling funds used for crime, it will be confiscated. If it has nothing to do with the case, it should be unfrozen and returned within three days.

Legal basis:

Article 2 of the Provisions of the Supreme People's Court on the Attachment, Seizure and Freezing of Property in Civil Execution by People's Courts

The people's courts may attach, seize and freeze chattels in the possession of the person subjected to execution, real estate registered in the name of the person subjected to execution, specific chattels and other property rights.

the ownership of unregistered buildings and land use rights shall be determined according to the approval documents of land use rights and other relevant evidence.

the people's court may seal up, detain or freeze the movable property possessed by a third person or the immovable property, specific movable property and other property rights registered in the name of a third person, if the third person confirms in writing that the property belongs to the person subjected to execution.