Iraqi security forces cordoned off parts of al Hajaj village, some 20 kilometers (14 miles) north of Tikrit, after twin suicide blasts hit a wedding party late on Wednesday.
Local sources reported two further blasts targeting security forces at the scene shortly afterwards. Clashes between security forces and militants in the area were ongoing in the hours after the attack, sources said.
The attacks were not immediately claimed, although the so-called “Islamic State” (IS) militant group has carried out similar style attacks in recent months. In November, IS conducted bomb attacks in Tikrit and Samarra, apparent diversionary bombings intended to drive back military forces from gaining ground in Mosul, the country’s second largest city and a key IS stronghold.