  Considering a third-generation squark as the lightest supersymmetric particle
(LSP), we investigate R-parity violating collider signatures with bilinear LH
or trilinear LQD operators that may contribute to observed neutrino masses and
mixings. Reinterpreting the LHC 7+8 TeV results of SUSY and leptoquark
searches, we find that third-generation squark LSPs decaying to first- or
second-generation leptons are generally excluded up to at least about 660 GeV
at 95%C.L.. One notable feature of many models is that sbottoms can decay to
top quarks and charged leptons that lead to a broader invariant mass spectrum
and weaker collider constraints. More dedicated searches with $b$-taggings or
top reconstructions are thus encouraged. Finally, we discuss that the recently
observed excesses in the CMS leptoquark search can be accommodated by the decay
of sbottom LSPs in the LQD$_{113+131}$ model.
