Germany's justice minister on Sunday proposed that purchasers of dangerous chemicals should have to supply identification, after three suspected Islamic militants were arrested on suspicion of planning massive terror bombings using hydrogen peroxide, according to AP. «The fact that the chemicals in the case of the three arrested suspects could be freely bought without registering the purchaser is, I think not, particularly fortunate,» Brigitte Zypries said on Deutschlandfunk radio. She said she was reviewing whether to make a formal proposal to the Environment Ministry for such a measure. The three suspects, arrested Tuesday by an elite anti-terror squad at a rented cottage in central Germany, had stockpiled 730 kilograms (1,600 pounds) of 35-percent hydrogen peroxide in large blue jugs purchased from a chemical supplier. Officials said they could have mixed the peroxide with other substances to make explosives equivalent to 550 kilograms (1,200 pounds) of dynamite. Bombs made from hydrogen peroxide have been used in terror attacks including the bombings that killed 52 people in London in 2005. In low concentrations, hydrogen peroxide is used as a disinfectant and to bleach hair. German police arrested Fritz Martin Gelowicz, 28, described as the leader of an Islamic Jihad Union terror cell in Germany, and Daniel Martin Schneider, 22, both German converts to Islam. The third suspect has been identified as Adem Yilmaz, 29, born in Turkey but also living in Germany. Prosecutors said the three formed a German cell of the radical Islamic Jihad Union, an offshoot of the Islamic Movement of Uzbekistan, a jihadist group with origins in Central Asia. The three had attended terrorist training camps in Pakistan, officials said.