According to the source, a car rigged with explosives exploded in the Northern part of Baghdad.
Another explosion occurred on a crowded street in the Iraqi city of Tikrit at the same time as the blast in the capital.
"Eight are killed and 52 are wounded from the Tikrit al-Atibaa street attack," Reuters cited governorate media director Jamal Aqaab saying.
#Iraq:Raw video of the suicide bomb explosion in #Tikrit city on Wednesday pic.twitter.com/YRP3FDyXg1
— Ali Al Shouk (@alialshouk) March 15, 2017
Iraq was rocked by a number of deadly attacks in the first months of 2017, with dozens of casualties.