NEW : The writer of the e-mailed threats to the Swedish news agency and police mentions the presence of Swedish troops in Afghanistan and a Swedish cartoonist who depicted the prophet Mohammed , according to TT , a Swedish news wire that received the threats . British police execute search warrant in connection with Swedish investigation . Comment: One person died , and two people were injured in the explosions . Police say they received an e-mail threat before the explosions .
NEW : British police execute search warrant in connection with Swedish investigation . Comment: One person died , and two people were injured in the explosions . Police say they received an e-mail threat before the explosions .