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Backstreet Boys singer Nick Carter has reportedly taken out extra security measures for his family, after concerning comments made by his brother Aaron on Instagram live.

Earlier this week, Nick took to Twitter to reveal he had taken out a restraining order against his brother, citing recent “alarming behaviour” and threats against his wife and unborn child.

Things escalated further on Friday when Aaron, who frequently streams his daily activities on Instagram, commented that he would “kill everybody”.

US Weekly reports that a video circulating on social media shows the younger Carter brother picking up a firearm and asking “are you not entertained?”

He then identifies himself as Maximus – the Russell Crowe character from the film Gladiator – and says that he is willing to “kill” and “battle”.

Blogger Perez Hilton Tweeted about the situation, and Nick Carter responded, saying that he is “afraid” for his family’s safety following these latest developments.

His wife Lauren, who suffered a miscarriage in 2018, is due to give birth to their second child in the next few weeks, and a source close to the family told Us Weekly:

“Nick has beefed up security. There is definite concern for Lauren and this situation has been very stressful for her. She’s very close to her due date but because of what happened previously with her pregnancies and the stress, they just want the baby to get here safely and there is concern that because of the stress she will go into early labor.”

Aaron has spoken openly about his struggles with substance abuse and mental health in recent times, and recently opened up about his progress on US panel show The Doctors.

Image: Getty Images / John Sciulli