Diary entries of Twisted Twins who killed their mother in the bathtub

The harrowing diary entries written by identical twin girls who murdered their mother have been revealed in a documentary.

Jasmiyah and Tasmiyah Whitehead were 16 years old when they stabbed Jarmecca 'Nikki' Whitehead, 34, so violently that they severed her spinal cord. She also suffered stab wounds to her lung, jugular and the back of her neck.

The twins, now 30, turned on their parent following an argument on January 13, 2010, at their home in Conyers, Georgia - after getting up late for school.

Now, a former police captain who worked on the case has unveiled Jasmiyah and Tasmiyah's chilling messages written to one another ahead of the brutal killing.

Talking in ITV's Twisted Twins, forensic police officer Jackie Dunn revealed the passage that stuck out to him the most, explaining: 'When we were processing the scene, we found a journal'.

Before reading the diary entry, Jackie said: 'We were able to find a number of calls from Nikki to 911 saying that the twins are aggressive towards her.

'Nikki Whitehead, she was trying to implement rules and give them a curfew, and the twins they didn't like that, and they became aggressive.'

When they discovered the diary, they noted: 'If you look through this journal, you see a paragraph of this handwriting, a paragraph of this handwriting [pointing to each of the twins writing]'.

'This paragraph sticks out to me, it says, ''it hit me hard last night too, we've got to get rid of her'', the response to that, ''I know, that's what I think also, she [has] gotta go ASAP.'

'That might be premeditation, but we couldn't just go a hunch, we needed something concrete,' they added.

In 2015, 11alive said the sisters recounted chilling details of the knife attack in confessions, revealing that their mother told her daughters she hated them as she bled to death in the bathtub. 

'My state of mind at the time was defend yourself. It wasn't like a fight on the street, it was more like a fight until somebody dies,' said Jasmiyah during the interview.

The twins told prosecutors they had gotten into a verbal argument with their mother that morning, who was holding a pot at the time to threaten them. They claimed that as they tried to take the pot away from their mother, the fight became violent.

During her filmed statement, Jasmiyah said: 'We all yelling, we all mad. Somehow, someway I don't know where she got it from, I don't even remember a knife block but she has a knife.'

Jasmiyah admitted she broke a vase over her mother's head while Tasmiyah grabbed the pot and hit her with it.

In the chaos, the knife ended up being held by Tasmiyah who stabbed her mother as her twin strangled her with a ribbon. Jasmiyah then took the knife and continued to stab her.

They carried their injured mother to the bathtub, which was filled with water. As she lay dying, her daughters watched and the mother told them she hated them, 11alive reported.

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The twins watched their mother sink below the surface and knew that she was dead, they said in statements.

After the murder, the girls collected their mother's purse and phone along with the pot and knife in a plastic bag, and then went to school.

It wasn't until later that day that the girls summoned a Rockdale County Sheriff's deputy who was driving by their home.

He found the victim submerged in the bathtub. The officer said at the time that he could 'smell the blood' in the air at the home.

The teens lied and said they found their mother dead.

Police initially treated them as victims but found that the 16-year-olds had cuts and bite marks, implicating their involvement in a vicious fight.

Both girls originally pleaded not guilty when they were arrested and charged four months later.

The twins both expressed regret that they had not called the police and helped their injured mother.

The family had a violent history prior before the fight, which escalated to murder. Nikki had accused her daughters of smoking marijuana and being sexually active, and they in turn had accused her of using illegal drugs.

The twins got in a fight with their mother in 2008 and were forced by a juvenile court to live with their great-grandmother, Della Frasier.

They moved back with their mother a week before the murder. The twins had told a counselor that if forced to go back to their mother's home they would kill her, according to a prosecutor in 2014.

Jarmecca Whitehead's mother, Lydia Whitehead, told the court in 2014 that she was heartbroken over her daughter's death but that she loves and forgave the twins.

'Unfortunately, my grandchildren never learned right from wrong… and that's why we are here,' she said. 'They should be in college, not sitting somewhere in jail.'

Twisted Twins airs on ITV, Tuesday 8 October at 9pm, also available on ITVX.