In the city's Beliaghata area, clashes broke out between two groups of people, following which the police resorted to mild lathicharge to disperse them.
Security measures have been heightened in view of the violence in the previous phases, particularly the death of five people in Cooch Behar in the fourth round of polling.
Four persons were killed when CISF personnel opened fire allegedly after coming under attack from locals, who "attempted to snatch their rifles" in Cooch Behar district.
The youth, identified as Anand Burman, was dragged outside polling booth number 85 in Pathantuli area of Sitalkuchi while voting was underway and shot dead.
Claiming that a BJP wave was blowing across West Bengal and his party would form the next government, Modi said Banerjee's angry reactions indicate that she has lost the polls.
Elections are being held in 30 seats, most of which are in the once-Naxal-affected Jungle Mahal region, across five districts amid tight security, they said.