simple past tense and past participle of suspect
"The police arrested the man who was suspected of robbing the bank last night."
In plain English: To suspect something as true is to think it might be real even though you don't have full proof yet.
"The police suspected him of stealing the money from the register."
believed to be a cause or at fault.
"The investigation suggests that faulty wiring was suspected as the primary cause of the fire."
In plain English: Suspected means you think something is true but haven't found proof yet.
"The police arrested the man who was suspected of stealing the car yesterday."