<span style="color: #222222;">United Nations today said it is alarmed at death sentences given by a court run by Yemen's Huthi rebels to 30 academics, trade unionists and preachers for alleged spying. </span><br />'' <br />'' <span style="color: #222222;">The UN Human Rights Office spokesperson Ravina Shamdasani told reporters that they have received credible information suggesting that many of those convicted were subjected to arbitrary or unlawful detention as well as torture. </span><br />'' <br />'' <span style="color: #222222;">She said those condemned were accused of spying for the Saudi-led coalition, which intervened in Yemen in March 2015, shortly after the Iran-backed Huthis seized the capital Sanaa.</span><br />'' <span style="color: #222222;"><br />'' The rights office has urged the appeals court to consider the serious allegations of torture and other ill-treatment, and of violations of the fair trial and due process rights of the convicted people.<br />'' <br />''Yemen's conflict has killed tens of thousands of people, many of them civilians and left millions displaced and in need of aid. </span>