(Adds reaction of NATO secretary-general paragraphs 4-5) By Ismail Sameem KANDAHAR, Afghanistan, June 22 (Reuters) - An air strike by foreign-led forces killed 25 civilians, including 12 members of a family, and 20 Taliban fighters in southern Afghanistan, a police chief said on Friday. Helmand provincial police chief Hussien Andiwal said the raid took place on Thursday night as part of an operation against Taliban fighters by foreign forces and Afghan troops. A spokesman for the U.S. military said he had no immediate comment on the incident, but NATO -- which runs a separate force under overall U.S. command -- said it carried out the air strike after alliance forces came under attack by insurgents. "This happens and it's always dramatic ... this happens, unfortunately," NATO Secretary-General Jaap de Hoop Scheffer told a televised news conference in Quebec City, Canada. "We continually have to look at our procedures and that is what's happening. We continually have to look at rules of engagement," he said, and accused Taliban fighters of using civilians as shields. The strike occurred in Girishk district of Helmand, a long-time bastion for the Taliban and the leading drug producing province of Afghanistan, the world's major heroin supplier. "Nine women and three children have been killed in one family in the bombardment," Andiwal told Reuters. He later said 25 civilians had been killed in the raid as several houses in another part of the small village were also hit. GERMAN ALERT The incident comes amid rising violence in Afghanistan over the past 17 months, the bloodiest period since the overthrow of the Taliban government in 2001. It also coincides with a warning by German authorities of serious attack threats in Afghanistan and Pakistan, as well as further afield in Europe and in the United States. More than 230 civilians have been killed this year alone during operations by foreign and Afghan forces, according to an umbrella body for aid groups in Afghanistan. Civilian deaths are a sensitive issue for President Hamid Karzai's government and the foreign forces hunting the Taliban and their allies. A series of protests demanding the expulsion of U.S. forces and the resignation of Karzai have been held in recent months over civilian casualties caused by foreign forces. Faced with growing Afghan frustration over rampant corruption and lack of development, Karzai has repeatedly urged foreign forces to co-ordinate anti-militant operations with his government and has warned about civilian deaths. NATO said its counter-attack on Thursday -- involving small arms fire and backed by air support -- killed most of the 30 insurgents who had occupied a compound. Germany's Interior Ministry spokesman, Christian Sachs, said on Friday there was evidence to suggest terrorist training groups in Afghanistan had become stronger and were ready for action. People from Europe, including Germany, were part of these groups. German broadcaster ZDF reported that the government had evidence that 10 to 12 people from Germany were in militant training camps in Afghanistan and Pakistan. Three of them, including two people considered dangerous, were arrested in Pakistan as they attempted to travel back to Germany, ZDF said. (Additional reporting by Sayed Salahuddin in Kabul; Sabine Siebold and Iain Rogers in Berlin; David Ljunggren in Ottawa)
