A federal lawsuit alleges that Oklahoma police "cruelly injured" an 86-year-old disabled woman by using a stun gun on her while she was in a hospital-type bed.

It has been reported that Lona M. Varner and her grandson, Lonnie D. Tinsley of El Reno, Okla., filed a federal law suit in Oklahoma City saying their civil rights were violated. The damages being sought weren't specified.

The Oklahoman reported on Sunday that they allege El Reno failed to adequately discipline and train its police officers involved a Dec. 22 incident when El Reno officers used a stun gun on Varner after she allegedly threatened them from her bed.

Tinsley had allegedly called 911 to summon paramedics to check on Varner.

Tinsley said in the 911 call, "She says … her life is over. She wants to end it. … She's taken some medicine. I don't know what she's taken. I can't get her to tell me what she took. … She's kind of upset and everything else."

The law suit further alleges that as many as 10 police officers arrived, with at least one stepping on Varner's oxygen hose "until she began to suffer oxygen deprivation."

The Oklahoman also reported that Varner allegedly pulled a knife from under a pillow and threatened officers, one of whom fired a stun gun at her, striking with only one prong.

Attorneys alleged in the lawsuit, "The police then fired a second Taser, striking her to the right and left of the midline of her upper chest and applied high voltage, causing burns to her chest, extreme pain and to pass out. The police then grabbed Ms. Varner by her forearms and jerked hands together, causing her soft flesh to tear and bleed on her bed; they then handcuffed her." (With Inputs from Agencies)