<p>A senior Ukrainian official said it was an "open question" whether a "humanitarian corridor" would be opened on Wednesday to evacuate more civilians from the besieged Ukrainian port city of Mariupol.</p>.<p>Deputy Prime Minister Iryna Vereshchuk also said in a video address that Russian forces were in control of a hospital which they captured on Tuesday in Mariupol, and that 400 staff and patients there were being held hostage.</p>.<p>Russian troops had opened fire from artillery positions on the grounds of the hospital, she said. <em>Reuters</em> was unable immediately to verify the information.</p>.<p><strong>Check out the latest videos from <i data-stringify-type="italic">DH</i>:</strong></p>
<p>A senior Ukrainian official said it was an "open question" whether a "humanitarian corridor" would be opened on Wednesday to evacuate more civilians from the besieged Ukrainian port city of Mariupol.</p>.<p>Deputy Prime Minister Iryna Vereshchuk also said in a video address that Russian forces were in control of a hospital which they captured on Tuesday in Mariupol, and that 400 staff and patients there were being held hostage.</p>.<p>Russian troops had opened fire from artillery positions on the grounds of the hospital, she said. <em>Reuters</em> was unable immediately to verify the information.</p>.<p><strong>Check out the latest videos from <i data-stringify-type="italic">DH</i>:</strong></p>