Bronx woman charged with murder , robbery ; police say a man is still being sought . Score: 6 Latvia native had lived alone since wife died last year ; son suspects killing is random .
Bronx woman charged with murder , robbery ; police say a man is still being sought . Guido Felix Brinkmann , 89 , was found strangled Thursday in Manhattan apartment . Latvia native had lived alone since wife died last year ; son suspects killing is random .