BERLIN — About 1.3 tons of anabolic steroids and anti-impotence drugs were seized by German authorities in an investigation of illegal trade in doping substances.

Kiel prosecutors and customs investigators in Hamburg said Tuesday the raids in January and February netted drugs with a black-market value of about $1.2 million.

The main suspect, a 33-year-old German man who had moved to Austria, was arrested Feb. 18 at Hamburg airport as he entered the country, investigators said.

The drugs included 384 pounds of the bodybuilding supplement Winstrol Depot; 1,102 pounds of kamagra, an anti-impotence drug; and other anabolic steroids.

The substances came from countries including China, Iran, Lebanon and Spain, investigators said, adding that they appeared to be "destined for the domestic bodybuilding scene."

They said they also seized documents that suggested there had been "a roaring trade ... for at least three years" in the drugs.