The mum's blog for female jihadis

One image shows a homemade cake which celebrates the horrific terror attacks of 9/11.

An online forum used as a recruiting tool by female extremists has been uncovered.

The Free Our Sisters network features propaganda posters and home-made letters for jailed Muslim prisoners involved in terror cases.

According to the Daily Mail one image shows a home-made cake with a toy plane crashing into the chocolate next to Osama bin Laden's face to celebrate the horrific 9/11 attacks.

Terrorists and bomb-makers are also praised and photos show young children wearing full veils holding placards in support of radical prisoners.

One of the female extremists promoted is Colleen LaRose, also known as "Jihadi Jane".

The 52-year-old American convert was jailed in 2014 for conspiring to murder a Swedish cartoonist.

The Free Our Sisters page describes her as a woman who "wanted to repay a Muhammad cartoon with murder".

One alleged member of the group tried to send a card to Boston Marathon bomber Dzhokhar Tsarnaev who is on death row after killing three people and injuring 280 others.

The card was returned to the sender who tweeted an image of it with a crying emoji face.

- nzherald.co.nz