Several friends jointly guaranteed a loan of 6,543,800 yuan for a swindler in Minsheng Bank. Now the swindler has been arrested and imprisoned, involving more than 30 million such loans.

According to the Contract Law of People's Republic of China (PRC) and the Guarantee Law of People's Republic of China (PRC), if a friend signs a guarantee agreement and the swindler fails to repay the loan, then the friend who is the guarantor needs to bear the guarantee responsibility and compensate the loan principal and interest. If it involves the illegal acts of swindlers, the guarantor may also face the risk of being sued. According to the provisions of the Criminal Law of People's Republic of China (PRC), if the person involved in the guarantee fails to fulfill his duty of care, which leads to loan fraud, he can also be identified as an accomplice. Therefore, it is not without legal basis for a friend to be sued by the court.

As for whether a fine must be paid before the judgment, it depends on the specific circumstances. Generally speaking, if there are clear provisions in the judgment, it shall be performed in accordance with the instructions of the judgment. If a friend can't pay the fine in time, he can apply to the court for financial difficulties and ask for a reduction or exemption of the fine or payment by installments. But this needs specific analysis.