Longmont police arrived to a crowd of more than 30 people “running around yelling and screaming” at an apartment complex in the 1200 block of Kimbark Street shortly before 9 p.m. Monday.

While dispatch received the call as a possible shooting, according to arrest affidavits it was a fight between two families that involved baseball bats and crowbars.

A mother and son were arrested after the fight, but it’s not clear if the police have located others who may have been involved.

Denise Martinez, 37, was arrested on suspicion of dueling, disorderly conduct with a deadly weapon, and six counts of felony menacing.

Her son, Juan Manuel Martinez, 19, was arrested on suspicion of felony menacing and second-degree assault.

According to an affidavit, Denise Martinez does not like her daughter’s boyfriend and had been threatening the boyfriend and his brother.

Martinez’ son, Juan Manuel Martinez, 19, called the boyfriend’s brother a few hours before the incident to say he was going to their home to confront them with guns, the brother told police, who interviewed him while he was in the hospital.

The brother told police that he and other family members waited in a parking lot of the apartment complex. The brother armed himself with a baseball bat for protection. When he saw the Martinezes and two unknown men approaching, he yelled at them to leave his brother and him alone, according to an affidavit.

The brother told police that Juan Manuel Martinez then hit his shoulder with a metal baseball bat. One of the unknown men hit the brother in the back of the head with another bat, the affidavit says.

The brother then fell, he told police, and the men continued to hit him. At some point he lost consciousness and awoke to flashing emergency lights, according to an affidavit.

The brother’s wife told police she also saw Denise Martinez hitting him while he was on the ground. At that point his wife came outside, and Denise Martinez turned to hit her. The brother’s wife blocked the bat with her arms, which had red marks, according to an affidavit.

Both the brother and his wife were taken to Longmont United Hospital.

Another family member of the boyfriend told police they were all in the parking lot after returning from a store when three men and one woman, all carrying bats or metal pipes, approached them.

The family member knew the boyfriend and his family had issues with another family, but only knew it was over a girl, according to the affidavit.

They targeted the boyfriend’s brother, the family member said, adding that the woman seemed like the main aggressor. The family member rushed into the fight to defend the brother and was hit with a bat by Denise Martinez while doing so, according to the affidavit. He was also taken to the hospital.

The family member’s mother also attempted to stop the fight, and was hit with a bat by one of the unknown men.

While Longmont police later found Denise Martinez and Juan Manuel Martinez, it’s not clear whether they have identified the two unknown men who are also accused of hitting people in the parking lot.

Denise Martinez told police that the brother sent her texts asking her to come fight him. Her son, Juan Manuel Martinez, did not provide any information or statement to police, according to an affidavit.

Both are scheduled to make their first court appearances this afternoon in Boulder County Jail. Bond has not yet been set in either case.

Denise Martinez was previously convicted for retaliation against a victim or witness and for providing false identification, according to Colorado courts records. Juan Manuel Martinez has no prior criminal history in Colorado.

Madeline St. Amour: 303-684-5212, mstamour@prairiemountainmedia.com