Two people have been killed after the father of a murder victim detonated two grenades in a courtroom in Ukraine.

The father was killed instantly and seven others were injured in the blast, police in Nikipol said.

The three defendants were among those wounded.

Seven others were injured in the blast, including the three defendants (Police handout)

Pictures from the scene showed blood on the floor of the wrecked courtroom.

In a statement, police said: "Today, on November 30, at 11.20, in the Nikopol court, during a hearing of the case on murder, the victim's father pulled out two grenades and blew them up.

“The man died on the spot from the explosion.

"Three defendants, two convoy officers, a court officer and one civilian were injured.

“All victims were taken to the hospital.”

The grenades caused devastation and blew out the courtroom's windows (Police handout)

The Council of Judges of Ukraine confirmed two explosions had taken place.

In a statement on Facebook, they said: In the Nikopol City Court of the Dnipropetrovsk region, after the announcement of a break in the criminal case, there were two explosions.

“There are dead and injured. Investigations are underway."