Police said several people were involved in the Sunday afternoon incident, which took place on a sidewalk.
Secretary of State John Kerry plans to try to negotiate a ceasefire.
The fair runs until Sunday.
The president is accusing pro-Russian separatists of removing evidence and bodies from the crash site.
The measure does not include an exemption for religious organizations.
He was involved in one of two skydiving accidents over the weekend.
Seven Israeli soldiers were killed Monday in clashes with Palestinian militants, the Israeli military said.
Photos submitted to ReportIt, July 20-26, 2014.
Submitted July 20, 2014, by Beth Malek.
President Barack Obama accused the rebels of tampering with evidence and insulting victims’ families, warning of new sanctions.