Alongside the incident itself, the judge is investigating alleged efforts by Rubiales, the former head of Spain’s football association (RFEF), to pressure Hermoso into saying the kiss was consensual.
Vilda, who was sacked as manager 10 days after the World Cup win, has now been brought into the expanded investigation, according to a statement by Spain’s High Court.
The statement did not elaborate on the reason, though Spanish media have reported that Vilda allegedly pressured Hermoso to put out a statement exonerating Rubiales.
Vilda has denied those reports.
Spainwent into the Women’s World Cup in Australia and New Zealand following a revolt by several senior players against their treatment by Vilda.
Despite the row, Spain triumphed at the tournament in August, beating England 1-0 in the final in Sydney.
But their victory was almost immediately overshadowed by Rubiales grabbing and kissing Hermoso on the lips during the presentation ceremony.
Judge Francisco de Jorge is investigating the complaint.
Initially, only Rubiales was under formal investigation, while other federation officials and players were called as witnesses.
However, Judge de Jorge has now put Vilda under investigation, while he has also changed the status of Albert Luque, the director of the men’s squad, and Ruben Rivera, the federation’s marketing chief, to “investigated”.
Earlier this month, Spain’s World Cup-winning women’s squad agreed to end their boycott of the national team after the RFEF said it would make “immediate and profound changes” to its structure.
Despite the boycott, the players were still summoned to play for the national team by new coach Montse Tome when the delayed squad for Spain’s upcoming Women’s Nations League games was announced.
The team agreed to end their boycott after a meeting lasting more than seven hours between the players, officials from the RFEF and Spain’s National Sports Council (CSD), as well as members of the players’ union FUTPRO.
They beat Switzerland 5-0 in the UEFA Women’s Nation League on Tuesday night.