AKIPRESS.COM - Multiple attacks less than 24 hours apart left at least 49 dead in Nigeria on Wednesday, a day after Boko Haram was named the world's deadliest terror group.

At least 15 were killed and more than 100 wounded Wednesday in the northern town of Kano after two suicide bombers blew themselves up outside a busy market. Those attacks came less than a day after 34 people were killed and 80 wounded in an explosion at a market in the northeastern city of Yola late Tuesday, USA Today reports.

No one immediately claimed responsibility for the attacks, but the incidents bore the hallmarks of Boko Haram, which is attempting to create an Islamic caliphate, or state, in Nigeria. The group pledged allegiance to the Islamic State earlier this year.

The attacks broke a three-week hiatus in bombings after a series of suicide attacks culminated in twin blasts in mosques in two northeastern cities on Oct. 23, leaving 42 dead and wounding more than 100 .

The Global Terrorism Index said Boko Haram was responsible for 6,644 deaths in 2014, a one-year increase of 317%. The Nigerian terror group overtook the Islamic State, which was responsible for the deaths of 6,073 people, according to the report published Tuesday by the Global Peace Institute.

Overall, Boko Haram's 6-year terror campaign has left more than 20,000 dead and forced another 2.3 million to flee.

Nigeria has experienced the largest increase in terror deaths ever recorded by a single nation, the study added. The nation is facing another insurgency by Fulani militants who killed 1,229 last year.