The number of victims killed in the Moscow subway terrorist acts has risen to 39, head of the Moscow Health Department Andrei Seltsovsky said on Tuesday, according to RIA Novosti.

"One critically wounded woman died in Sklifosovsky Hospital overnight," he told Rossiya 24 TV channel.

After the terror acts, 84 people sought medical aid, 71 of them still remain in hospitals. Five of those remaining in hospital are in critical condition.

On early Monday, two deadly blasts ripped through the packed Lubyanka and Park Kultury Moscow subway stations, killing at least 39 and wounding over 70.

Tuesday has been declared a Day of Mourning in the Russian capital over the victims of the two deadly subway blasts.