Abubakar Othman, a police spokesperson in Adamawa state, said the death toll from the attack in the town of Mubi is 50 people, but "there could be more as those seriously injured could add to the figure".
It was learnt that at least 50 people were killed after the suicide bomber attacked the crowed of Muslim worshippers.
"This is obviously the work of Boko Haram".
Weather: Unsettled with rain, sleet, and snow right through Sunday
Today expect a little patchy morning fog, then mostly sunny skies and highs near 67.and south winds around 5 miles per hour . Wednesday will bring highs in the middle to upper 40s and a high as mild as 50 on Thanksgiving day .
He said this is the deadliest attack on civilians by the militant group since the start of the year, "It is deplorable that the attack was launched at a time when civilians were congregating for dawn prayers".
Boko Haram rarely claims attacks but the method is in keeping with tactics seen elsewhere in the long-running conflict.
"The extremists held territory in Adamawa state in 2014", she notes, "but were pushed out of the areas under their control by early 2015 in a concerted offensive by the Nigerian military, backed by troops from neighboring countries".
Lebanese PM Hariri accepts invitation to France
Hezbollah, a group of Iran-backed Shiite Muslims centered in Lebanon , is the dominant political and military force in Lebanon. Lebanon's top security agencies say they have no information to share about possible plots against the premier's life.
Abubakar added that numerous injured were receiving treatment nearby.
On November 19, Boko Haram bases in the Njimiya, Parisa and Gulumba areas near the Sambisa Forest of Borno state were hit by air strikes, leading to "heavy losses", he claimed. "They have lost a staggering number of fighters, so they are now fighting back in their usual dastardly way, attacking civilians", he said.
"As I am talking to you, I saw over 22 dead with many injured including the suicide bomber, " said a resident who simply identified himself as Bello.
SA Rugby Accepts Rugby World Cup 2023 Vote Outcome
They led after the first round by receiving 18 votes to South Africa's 13, with Ireland eliminated after receiving eight. We would have had the same thing here. "There's all these issues which are hard for us to understand", he said.
Ryan Cummings, from security analysts Signal Risk, said the attack suggests Boko Haram "has an active operational presence in Adamawa" and retained the capacity to hit hard.