The Illinois Complaint in Eviction is a legal document used in the state of Illinois to initiate eviction proceedings. It is filed in the county where the property is located by the landlord or property manager to begin the eviction process. The Complaint must include the full names of all parties involved and the reason for the eviction. The Complaint may also state the amount of unpaid rent, damages, and other amounts owed to the landlord. There are two types of Illinois Complaint in Eviction: a Forcible Entry and Detained (FED) and a Regular Action. The FED complaint is used when a tenant has illegally entered or taken possession of the property without the landlord’s permission. The Regular Action complaint is used when a tenant has failed to pay rent or has otherwise violated the terms of the lease. Both types of complaint require the landlord to provide the court with evidence to support their claim.