Local TV footage showed Maguire leaving a courthouse on neighboring Syros island, apparently accompanied by members of his legal team, and boarding a dark minivan.
His lawyer Constantinos Darivas had earlier told Greek sports website gazzetta.gr that the England center-back had denied the charges, and was in “fine condition” despite spending two nights in detention since his Thursday night arrest.
Greek TV channel Mega said Maguire’s father had flown to Greece to be at his son’s side.
The case is being heard on the island of Syros, the administrative hub of the Cycladic island group that includes Mykonos.
The local prosecutor is expected to set a date for the hearing.
The £80 million (88 million euros) defender was arrested late Thursday after what Greek police described as an “altercation” between two groups of British tourists on Mykonos.
Mega said Maguire had become enraged after someone in the other group struck his sister.
A Greek police statement on Friday said that three men aged 27, 28, and 29 had been arrested in Mykonos.
The police said an officer was punched on the scene, and that a second fight had broken out at the local police station where the three men “strenuously resisted (arrest), pushing and striking three officers.”
One of the suspects then tried to bribe the officers to hush up the incident, the police said.
The suspects are accused of assault, resisting arrest, verbally insulting and threatening the arresting officers, and attempted bribery, the police said.
Four Mykonos officers sustained slight injuries in the fracas, the authorities said.
Mykonos is popular with sports stars and celebrities for its all-night nightlife and beaches.
United on Friday said in a brief statement they were “aware of an alleged incident involving Harry Maguire in Mykonos last night.”
“Contact has been made with Harry, and he is fully cooperating with the Greek authorities.
“At this time we will be making no further comment,” the club added.
United’s 2019/20 season ended Sunday in a 2-1 defeat to Sevilla in the Europa League semi-finals.
But the club will be back in pre-season training in two weeks and could begin the new Premier League campaign in less than a month.
On Monday, Maguire had tweeted after the elimination: “Time to go away, reflect, recover and be ready to come back stronger next season.”