• British twin sisters,who last year fled to Syria to join ISIS,posted an image on Twitter,showing a military drill.
    British twin sisters, who last year fled to Syria to join ISIS, posted an image on Twitter, showing a military drill.Twitter
  • British Twins Zahra and Salma Halane, 17,
    British Twins Zahra and Salma Halane, 17,Twitter

Two British twin sisters, who travelled to Syria last year to become ISIS jihadi brides, have posted recent pictures of them participating in a military drill armed with pistols and Kalashnikovs.

In the images posted online by the British teenage girls Zahra and Salma Halane, 17, one woman is seen holding a pistol, while two others are seen firing Kalashnikov assault rifles during the target shooting practise.

"Fun day training for self defence in the Islamic state with humble sisters," read the post on the Twitter account that posted the pictures. According to the The Telegraph, the account that posted the pictures and the message belongs to Zahra, while another account thought to be Salma's has retweeted it.

Salma also posted an image showing women armed with weapons firing their guns in an open field.

The twins - Salma and Zahra left Chorlton, in the northwest of England, in the summer of 2014 to become 'jihadi brides.' The two reportedly got married to ISIS militants in Raqqa, whom they had met online. Their family had reportedly tried in vain to get them back to come to UK.

A recent report found that the young girls and women, who have joined ISIS in Syria, have become "desensitised" to murder and "revel in the gore."

The study conducted by Institute for Strategic Dialogue, published by Express.co.uk attempted to understand what made women educated in the West to join ISIS.

The study said: "There is no doubt, therefore, that the women who migrate to the territory controlled by Isis revel in the gore and brutality of the organisation. They appear desensitised to the horrific nature of the violent acts being committed."

The study also had warned that British women who have travelled to these regions could return home to carry out terror attacks. It is found that at least over 500 women from Europe have joined ISIS.