An Israeli military court sentenced Omar Jaber, 55, from Tulkarem to 30 years in prison, the Ahrar center for Palestinian prisoners said on Thursday.Wisam Ghbariyeh, a lawyer at the center, said Omar Jaber was first arrested in 2008.Jaber suffers from diabetes, severe infections in the colon, and a stomach ulcer, the center says. He has undergone investigation by Israeli officers for 61 days in a row