FUKUSHIMA - A Fukushima prefectural police helicopter crash-landed Saturday in the city of Koriyama in the northeastern Japanese prefecture, injuring all 7 persons on board, including 1 seriously, authorities said.

Five police officers and 2 medical workers were on board the aircraft, which was transporting a heart for transplant, local police said.

One of the medical workers has been seriously hurt but the injuries are not life-threatening, the police said.

The chopper crash-landed in the district of Shimomoriya around 12 kilometers west of JR Asakanagamori Station. The regional rescue association said a call was made to emergency services around 8:10 a.m.