Michael Lauber may face looting as Switzerland's attorney general, while the Alpine country's parliament investigates his alleged meetings with FIFA chief Gianni Infantino, the global body of football.
Lauber is responsible for conducting investigations into alleged corruption in FIFA, but the The judicial committee of the Swiss parliament wants to know whether any collusion between Swiss promoters and FIFA, based in Zurich.
The committee – which will question Lauber on May 20 – said it noted a disciplinary decision taken by the supervisory authority that oversees his office on March 2 to sanction Lauber by cutting his salary.
That investigation found that Lauber had committed "very serious violations" before, but also during disciplinary proceedings, the committee said.
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"This included statements contrary to the truth, violation of the duty of loyalty or obstruction of disciplinary investigation," he said.
Lauber appealed this decision, accusing the watchdog of having made several procedural errors, exceeding his powers and "being biased".
After hearing the attorney general, the judicial committee "then intends to decide on the possible opening of impeachment cases against him," he said in a statement.
& # 39; Ready to cooperate & # 39;
FIFA never denied the informal meetings between Infantino and Lauber in 2016 and 2017, saying that they intended to show that the federation was "ready to cooperate with the Swiss justice system".
Switzerland has been pursuing several cases since an invasion of a luxury hotel in Zurich in May 2015 led to the arrest of several FIFA executives and exposed an allegedly corrupt belly in world football.
In total, more than 20 FIFA cases have been opened in Switzerland in the past five years in allegations of corruption and vote buying and in the granting of television rights contracts.
In an interview with the Swiss magazine L & # 39; Illustre published on Wednesday, the former president of Union of European Football Associations, Michel Platini, invited Infantino to resign.
He claimed that Infantino and Lauber considered themselves "untouchable and above the law".
Lauber was also accused by anti-corruption activists of standing in the way of a fraud trial due to payments linked to the 2006 World Cup in Germany.
The case has clouded the international reputation of the Swiss judicial system, which is also investigating high-level corruption cases linked to state-owned oil company Petrobras and Malaysia's 1MDB development fund.