BLOOMINGTON, Ind. (WISH) – A man has been arrested after trying to kill his 86-year-old grandmother.

Medics arrived to the 800 block of South Winridge Court late Monday night.

They were responding to a Life Alert call from a neck pendant belonging to an 86-year-old female.

“It was absolutely crucial, it was only  way she could reach out and let people know she was in danger, without it who knows when we would have arrived,” said Bloomington Police Captain Steve Kellams, on the victim pressing her Life Alert key chain.

According to police, when they got to the house, they heard yelling and called police.

When officers arrived they spoke to a man on the front porch covered in blood. He began fighting with officers and would not speak to them.

The man was later identified as 19-year-old Zachary Emswiller, the victim’s great grandson, and he was taken into custody.

When police entered the home, they found the elderly lady in her room covered in blood. She had been badly beaten.

According to police, her face and upper body were covered with lacerations and contusions. She said that her grandson, Emswiller, had attacked her and beaten her and attempted to strangle her.

The victim was transported to an Indianapolis hospital due to the extent of her injuries.

Police say Emswiller denied knowing the victim and could not tell them why he was covered in blood. He was arrested and faces preliminary charges of attempted murder and criminal confinement.

Family members for Emswiller says he suffers from mental illness, police are trying to determine if this is true.