Workers at Kenya's main port of Mombasa stopped operations for hours on Thursday, demanding more pay and paralysing dock work at the region's main gateway, union and management officials said, with the possibility of more disruptions this week. The port, the biggest in the east African region, handles imports such as fuel for Uganda, Burundi, Rwanda, South Sudan, eastern Democratic Republic of Congo and Somalia, and its throughput is an indicator of regional economic activity. Workers jammed the main entrance to the port's administrative headquarters, abandoning waiting ships. Union officials said the stoppage was caused by a failure by management to implement a collective bargaining agreement signed between the union and management in 2013.