dr. salman mel melgin yesterday. >>> philadelphia police are questioning three people in connection to the murder of an elderly woman in her east mount airy home. 85-year-old regina brunner was found dead on monday. her son discovered her. police say she was beaten and her throat slashed in an apparent robbery. yesterday, homicide detectives went to this row home in west oak lane with a search warrant. investigators tell nbc 10 that they found crucial evidence in the case including a laptop that possibly belonged to the elderly woman. >> are you surprised? >> if she was involved i'm definitely surprised. >> nbc 10 has also learned a woman is one of the three people being questioned by detectives. police continue to collect evidence including the victim's car which was discovered tuesday. it had been stolen the day she was killed. investigators have also tracked her stolen debit card to a local atm. >>> this morning, the fbi is not saying why its agents were at city hall in allentown yesterday. the fbi is confirming they were there. it's not clear how long the agents were in the building. a