Police retrieved what are believed to be two guns from inside the residence
TokyoReporter
One of the suspects called out to the woman in English in pretending to pick her up
Suspect also allegedly grabbed her wallet containing 9,000 yen in cash
Perpetrator was wearing a beige coat and a white breathing mask, police said
Investigators found blood stains that seemed to be from the victim on a wall near a futon
Suspect said, 'I used a lighter to start the fire'
Officers arriving at the residence in Yokohama City found the man's corpse in the bathtub
Suspect said, 'After my mother died on May 18, I didn't know what to do'
Pair wore masks in the robbery of 7 million yen in Japanese and U.S. currency on May 12
Victim was falsely told that her 'bank cards were being abused'