HOLYOKE – A panicked boy fleeing from his apartment yelling his mother was trying to shoot him, sparked an investigation that led to the arrest of the woman on a wide variety of charges including trafficking in heroin and cocaine and possession of two unlawful guns.

Norisabeth Santos, 31, was arrested at about 11:45 a.m., Wednesday, on a warrant charging her with reckless endangerment of a child, cocaine trafficking 100 grams or more, heroin trafficking 100 grams or more, two counts of possession of a firearm without a license to carry, possession of a large-capacity firearm in the commission of a felony, discharge of a firearm within 500 feet of a building, possession of a firearm with a defaced serial number, two counts of possession of ammunition without an FID card and possession to distribute marijuana, Police Lt. James Albert said.

The investigation was sparked when “a panic-stricken child, a 10-year-old boy, screaming for help and reporting that his mother had a gun and was trying to kill him” ran from an apartment at about 1 p.m., Friday. He was found at the intersection of Main and Cabot streets, he said.

Information led detectives to the fourth-floor left apartment at 342 Main St. and there, police found a spent shell casing in the home. Officers also seized a BMW 325 and, after receiving a warrant, searched the vehicle to find two fully-loaded handguns, a .40 caliber Glock Model 23 with an extended 30-round magazine and a 9 mm Hi Point C9 gun with an obliterated serial number, he said.

In the vehicle Police found 6,600 individually packaged bags of heroin, a 91-gram block of cocaine, about 53 grams of crack cocaine packaged in individual baggies, four pounds of marijuana and equipment used in drug processing, he said.

Officers received an arrest warrant for Santos, who lives in the Main Street apartment. She is expected to be arraigned in Holyoke District Court sometime Wednesday afternoon, Albert said.

The boy was removed from the family by the Department of Children and Families, which is conducting a separate investigation, he said.

The investigation is continuing. It is being conducted by the Holyoke Police Criminal Investigations Bureau with the help of the Massachusetts State Police Ballistics and Crime Scene units, Albert said.