A bomb blast ripped through a mosque during Friday prayers in northern Afghanistan, killing 33 people including children, just a day after the Islamic State group claimed two separate deadly attacks. Since Taliban fighters seized control of Afghanistan last year after ousting the US-backed government, the number of bombings has fallen IS has continued with attacks against targets they see as heretical. A string of bombings rocked the country this week, with deadly attacks targeting a school and a mosque in Shia neighbourhoods. Taliban government spokesman Zabihullah Mujahid tweeted that childr…