LYNN – A judge ordered a Lynn man held without bail and without prejudice on a murder charge in connection with a fatal stabbing Tuesday night. But official details of the case remain a mystery as attorneys did not discuss the case in court and agreed to impound the court files.Citing what he said were the contents of a single police report, Defense Attorney John Valerio told the court the information “raises a lot of concerns with the viability of this case.” He did not elaborate further, but more details may be forthcoming at a bail hearing next week.Shane Dennis, 39, of 41 Cowdrey Ave., was arrested and charged with murder at 9:30 a.m. Wednesday.He appeared later that afternoon in Lynn District Court, where his attorneys entered a plea of not guilty on the defendant’s behalf.Police and EMS responded to 10 Fayette Court at 8:46 p.m. Tuesday on the report of an assault and battery with a dangerous weapon, according to the Lynn Police Log.Essex District Attorney Spokesperson Carrie Kimball-Monahan said Wednesday a 46-year-old man believed to be from Lynn was stabbed at that time on Tuesday. The man, whose name has not been released pending notification of next of kin, was taken to Salem Hospital where he died of his injuries, Kimball-Monahan said.But instead of arguing bail or probable cause to hold the defendant without bail, Essex Assistant District Attorney Mark Byron and Defense Attorneys Valerio and Fred McAlary Jr. agreed that the court files would be impounded and that Dennis would be held without bail until a bail hearing on March 10.Neighbors on Fayette Court, which is just steps away from Ingalls Elementary School, said police and ambulance appeared at 10 Fayette Court at around 8:45 p.m. Tuesday, and that neighbors had heard somebody was stabbed.Neighbors and relatives of neighbors described the home to which police responded as a crack house: 10 to 20 residents regularly “squat” at the home, there are frequent late-night fights at the property, taxis come and go at all hours, and trash is strewn about the home and yard.”There are girls coming out of there crying, screaming at their boyfriends,” said neighbor Augustinho Couto. “Fancy cars show up at all times ? I feel bad for them, everybody needs a place to live, but you have to do it the right way.”He said neighborhood children give their recyclable bottles and cans to the home’s residents but try to avoid the property.Couto said police have responded this past winter to overdoses at the home and fights, and officers have told residents they are trying to get the owner – who is believed to live in Florida – to better control the property and its tenants.The house appears in poor shape. Numerous broken windows at the home are stuffed with insulation and other materials, a big-screen television sits in the driveway and there were several overflowing trash cans around the yard.Judge James Wexler accepted the attorneys’ agreement after reading the police report.Family members of Dennis left the courtroom quickly and without comment Wednesday afternoon.Dennis is scheduled to return to court March 10 when attorneys are expected to argue bail.