Stevenage boss Graham Westley has accused the fourth official of treating him "like a child" during his side's
Westley claims he was repeatedly intercepted by the official when he tried to step out of the dugout.
"I was asking my bench to get photos and video of Northampton's bench leaving the dugout and not being spoken to," he told BBC Three Counties Radio.
"I felt I like I was being victimised, I was being discriminated against."
The 46-year-old continued: "I'm not a child, I don't need a fourth official standing over me like a headmaster - I need to be treated with respect and I want it dealt with."
Earlier this season, Westley said unfavourable treatment by officials was tantamount to bullying and before their trip to Sixfields he had been upset by Northampton's refusal to move the date of the game to help Boro's fixture pile-up.
Stevenage were relegated from League One last season and Marc Richards' goal on Saturday saw them slip below the Cobblers to 15th in the table.