Robbie Neilson and John Hughes issued with notices of complaint
Hearts head coach Robbie Neilson and Inverness manager John Hughes have been issued with notices of complaint by the Scottish FA's compliance officer.
Both are alleged to have breached Disciplinary Rule 72 on 29 August by criticising officials in interviews and have until 22 September to respond.
Inverness drew with Dundee on 29 August while Hearts lost to Hamilton.
Principal hearings have been set for 1 October and Hearts intend to challenge Neilson's notice of complaint.
Neilson said after the 3-2 defeat by Hamilton Academical that referee Willie Collum was wrong to send off Callum Paterson – a red card that was later rescinded on appeal.
And the Hearts head coach claimed he was expecting one of his players to be dismissed when he found out who the officials were at New Douglas Park. Neilson was later asked by the SFA to explain his comments.
"The game has been ruined by a decision that is not a sending-off," said Neilson on 29 August.
"We are sitting 2-1 up and we get a red card against us that I don't think is a red card and it totally changed the flow of the game.
"We actually practised during the week going down to 10 men because of the environment we're coming to and the officials who are taking the game and we have to do that.
"In the recent past, the statistics involving the officials have shown a lot of red cards against us, so we have to prepare for it.
"The next time we get these officials, we will again train with 10 men."
Hughes, meanwhile, was unhappy with decisions made by Andrew Dallas after the 1-1 draw at Dens Park.
The Caley Thistle manager said Dallas brought an "edginess and a nervousness" to the game and wasn't "ready to referee top-flight football".