Mentally Disable man killed in stabbing spree

Greg walker was a mentally DISABLED man, he was kind and harmless, defenseless.  Please forgive my writing or typos. This all just occured. Greg was brutally stabbed in penn hills last night. He was walking when he was approached by a man who stabbed him multiple times. He died on site. He was found 1 hour after he passed. He died on a road alone.  We ask for contributions for funeral expenses. Any contributions will be greatly appreciated.  The family was not prepared for this shocking loss.  Please send what you can for his family in this hard time of loss.  Thank you