Werder Bremen announcer Christian Stoll has apologised after describing a goal by Japan's Hiroki Sakai as "a bit of Fukushima" in their Bundesliga clash with Hanover 96.

Hanover's Japan defender Sakai, 23, had fired home a 41st-minute equaliser for his side, who went on to lose 3-2 in Bremen on Sunday to leave both sides mid-table.

Stoll described the goal to the 40,435 crowd at Bremen's Weser Stadion as "that shot was a bit of Fukushima" but later apologised for the offensive faux pas.

"That was stupid and I am sorry," said Stoll.

"I wanted to express that the shot was a real thunderbolt and the comment slipped out."

Right-back Sakai has made 12 appearances for Japan and joined Hanover in July 2012 from J-League side Kashiwa Reysol

The Fukushima nuclear plant suffered damage when an earthquake and tsunami, which killed over 18,000 people, hit north eastern Japan in March 2011.