Kim Kardashian West is ''sickened'' by gun control laws.

The 'Keeping Up With the Kardashians' star was horrified to hear reports of David Conley, who allegedly murdered his ex-girlfriend Valerie Jackson, her partner, Dwayne Jackson, and her six children by shooting them in the back of the head with a gun he is said to have bought online, and has called for a change in the law to prevent such a tragedy happening again.

She tweeted: ''Have u heard of the heart breaking story about David Conley who slaughtered his ex girlfriend & her entire family! Her 6 kids,husband & her!

''He purchased the gun & ammo ONLINE! How is it so easy to purchase guns online!!! Does this not sicken you? No background checks needed!!!!!

''These gun safety laws have to change! This poor woman was tied up & saw every child of hers & husband get executed over 10 hours!

''My thoughts & prayers go out to Valerie Jackson's family and friends! #GunLawsHAVEtoChange #GunSafety #BackgroundChecksNecessary (sic)''

The 34-year-old beauty - who has a two-year-old daughter, North, with husband Kanye West and is pregnant with their second child - has previously spoken of how she thinks gun laws should be tightened.

Asked what she wants to change about the world, she said: ''Gun control. ''I'm not the type to have them in my house. They scare me so much.

''If I could do something to change the world ... I'm not really a gun person, and we do not have strict enough gun control laws.''