This ends our live-blogging for May 3. Be sure to check back tomorrow for our continuing coverage.
At around 1 p.m. local time on May 3, a column of six Ural trucks pulling howitzers was filmed driving through central Donetsk, heading toward the north of the separatist-held city. (RFE/RL's Ukrainian Service)
Here is today's map of the military situation in eastern Ukraine, according to the National Security and Defense Council:
Two Ukrainian soldiers killed by mine in Luhansk:
Two Ukrainian soldiers were killed and three others wounded by a land-mine explosion in the eastern Luhansk region.
Hennadiy Moskal, the Ukrainian head of the Luhansk region, said on May 4 that a Ukrainian military vehicle drove over a mine near the village of Yekaterinivka the previous day.
Moskal said the two men were killed instantly by the blast, which occurred in Luhansk's Popasne district.
A southern portion of Ukraine's Luhansk region is controlled by Russian-backed separatists.
More than 6,100 people have been killed in fighting between Ukrainian soldiers and rebel fighters in eastern Ukraine in the past year, despite the signing of a cease-fire agreement in February. (Interfax and the Kyiv Post)
Donetsk separatist leader has little hope for Minsk contact-group talks this week, Interfax reports:
Head of the self-proclaimed Donetsk People's Republic Alexander Zakharchenko has doubts about the positive outcome of the Minsk meeting of the contact group scheduled for May 6.
"We - I and [head of the self-proclaimed Luhansk People's Republic Igor] Plotnitsky - have sent several proposals, verbalized them to our Ukrainian colleagues. But I don't think that the results of the meeting in Minsk will be positive," he said to journalists.