We completed the search for microlensing events in the zero latitude area of the Galactic bulge using the VVV Survey near-IR data obtained between 2010 and 2015 .
We have now a total sample of N = 630 events Using the near-IR Color-Magnitude Diagram we selected the Red Clump sources to analyze the longitude dependence of microlensing across the central region of the Galactic plane .
The events show a homogeneous distribution , smoothly increasing in numbers towards the Galactic centre , as predicted by different models .
We find a slight asymmetry , with a larger number of events toward negative longitudes than positive longitudes .
This asymmetry is seen both in the complete sample and the subsample of red clump giant sources , and it is possibly related with the inclination of the bar along the line of sight .
The timescale distribution is fairly symmetric with a peak in 17.4 \pm 1.0 days for the complete sample ( N = 630 events ) , and 20.7 \pm 1.0 days for the Red Clump stars ( N = 291 events ) , in agreement with previous results .