METHUEN, Mass. (WHDH) -- A woman was in critical condition Wednesday after police say she was found severely beaten inside a Methuen home Tuesday.

Sarah Plazola was in critical condition when she was taken to the hospital from her Lowell Street home.

“My daughter called me at suppertime and told me about all the trouble,” said Paul Siegel, the victim’s great uncle.

Siegel lives two doors down. He heard police but didn’t realize that his niece was hurt.

“I was sitting there reading and I heard the sirens, I figured most of it was coming down…it abruptly stopped,” said Siegel.

Police had received a 911 call around 4 p.m. Tuesday from someone who lives inside the home and later found 33-year-old Plazola with severe head wounds and a violent scene inside the house when they arrived.

First responders called for a helicopter due to the severity of the woman’s injuries.

Police interviewed several people Tuesday night and say the beating does not appear to be a random act of violence.

“There is no signs of a forced entry, no signs that anything was taken from the residence, which would be indicative that somebody gained entry that wasn’t allowed in by her. So we’re looking into different angles but at this point we do not think it was an intruder,” said Lt. James Jajuga Jr., Methuen Police Department.

Police arrested Plazola’s live-in boyfriend on Tuesday night. The District Attorney’s office said the man was arrested on an unrelated charge. Court paperwork says in the last year he has been accused of domestic violence against the victim three times. Tuesday’s arrest is not connected in any way to the attack on Plazola.

“Right now it’s ongoing. We do not know who the perpetrator is,” said Jajuga.