  Motivated by excesses in $ee jj$ and $e\nu jj$ channels observed by the CMS
collaboration, in 8 TeV LHC data, a model of lepto-quarks with mass around 500
GeV was proposed in the literature. In order to reproduce the claimed event
rate, lepto-quarks were assumed to have a significant partial branching ratio
into an extra sector, taken to be Dark Matter, other than the canonical $ej$.
We here show that the decay channel of lepto-quark into Dark Matter can fit
another excess claimed by CMS, in $\ell^+\ell^- jj E\!\!\!\!/_{\rm T}$: the
event rate, the distribution in di-lepton invariant mass and the rapidity range
are compatible with the data. We provide predictions for the forthcoming Run II
of the 14 TeV LHC and discuss aspects of dark matter detection.
