As many as 60 MEPs, mostly socialists, could be in the crosshairs of investigators as the European Parliament corruption scandal involving Qatar appears to be on the rise, Breitbart reports.

The ongoing corruption scandal in the European Parliament may involve many more MEPs than Greek socialist Eva Kaili and former Italian MP Pier Antonio Panzeri, both of whom were arrested last week, with Belgian investigators seizing €1.5 million from their homes .

The pair are said to have taken large sums of money from the governments of Qatar and Morocco, with MEP Kaili’s father being caught with a suitcase full of cash at the Sofitel hotel in Brussels.

As many as 60 MPs, most reportedly members of the Socialists and Reformists (S&D) group, may also be involved in the alleged corruption as part of a much larger network, Italian newspaper Il Giornale reports.

Belgian prosecutors have also named Abderrahim Atmoun, Morocco’s ambassador to Poland, as a person of interest in the case.

Atmoun is said to have been at the origin of gifts to Mr. Panzeri, his wife Maria Dolores Colleoni and his daughter Silvia Panzeri.

The family is said to have used a credit card linked to a person the family refers to as “the giant”, although it is unclear whether or not Ambassador Artmoun is the “giant” referred to by Panzeri and his family.

The communication between the family members was made public as part of an extradition request where Panzeri’s wife mentioned that the family had paid a whopping $100,000 for the Christmas holiday last year.

Both Panzeri’s wife and daughter are in Italian custody after being arrested on December 8 and are likely to be extradited to Belgium where they face up to five years in prison.

Greek MP Eva Kaili, meanwhile, has been relieved of her position as Vice President of the European Parliament, but has denied taking money from the Qatari government.

Greek prosecutors announced on Thursday that they too will investigate Kaili’s activities, including allegations of bribery and money laundering. Economic prosecutor Christos Bardakis has put two assistant prosecutors on the case, but Greece will only file charges if no charges are filed in Belgium.