Teen student, 17, guns down roommate as she's taking down their Christmas decorations

A teen has been arrested for allegedly gunning down his roommate as she took down the tinsel and baubles after celebrating Christmas in the home they shared in Texas.

Cayman Wilson, a 17-year-old student from Crosby in Texas, is being held on a $150,000 (£124,000) bond after being charged with manslaughter.

Local media reported the victim was Marissa Dikeman, 19, who was also studying at the Houston Christian University.

The incident took place at around 9pm on Thursday in Crosby, a town around 90 miles northeast of Houston.

Speaking to ABC, Dikeman's granddad said she finished working for her family's deer processing firm before returning home to take down decorations.

Suspect Cayman Wilson was helping Dikeman remove decorations when she was shot (Facebook)

Wilson is being held at the Harris County Jail on a $150,000 bond for the shooting of roommate Dikeman (pictured) (KTRK)

She was with two of her co-workers, both aged 17, who were also her roommates. Wilson was one of them

While helping Dikeman to remove the decorations, Wilson grabbed a shotgun before firing it at the student, killing her on the spot.

Harris County Sheriff's Office Sergeant, Greg Pinkins, said it's thought the weapon may have belonged to other roommates not present at the time of the shooting.

Dikeman shared this home in Crosby, Texas, with several roommates, including Wilson (KTRK)

Court documents suggest Wilson killed the 19-year-old while "playing with a firearm", the New York Post reports.

The victim's grandparents said Wilson was a "good kid", adding they don't want him to face a criminal charge for the killing of their beloved granddaughter.

“It’s bad enough that he has to live with what happened the rest of his life,” Dikeman’s grandfather said.

Court documents reveal Dikeman was shot while a firearm was being played with (KTRK)

Dikeman, who was set to graduate next year after majoring in educational administration, was the youngest of three siblings.

Wilson is set to appear in court on Tuesday.

It comes as cops in Idaho caught a suspect they think responsible for the fatal knifing of four of the state's university students.

Pennsylvania State Police arrested Bryan Christopher Kohberger, 28, at a home in Chestnuthill Township, authorities said on Friday.

It's thought that Dikeman was shot when she was taking down Christmas decorations (KTRK)

In the hours after his arrest, relatives have revealed how Kohberger followed extremist eating habits and rituals.

Latah County Prosecutor Bill Thompson said investigators believe Kohberger broke into the students' home "with the intent to commit murder."

The killings initially mystified law enforcement and shook the small town of Moscow, Idaho, a farming community of about 25,000 people.

Fears of a repeat attack prompted nearly half of the University of Idaho's over 11,000 students to leave the city and switch to online classes.