  We report on a search for pair production of first-generation scalar
leptoquarks (LQ) in ppbar collisions at sqrt(s)=1.96 TeV using an integrated
luminosity of 252pb-1 collected at the Fermilab Tevatron collider by the D0
detector. We observe no evidence for LQ production in the topologies arising
from LQLQbar->eqeq and LQLQbar->eqnuq, and derive 95% C.L. lower limits on the
LQ mass as a function of beta, where beta is the branching fraction for LQ->eq.
The limits are 241 and 218 GeV/c2 for beta=1 and 0.5, respectively. These
results are combined with those obtained by D0 at sqrt(s)=1.8 TeV, which
increases these LQ mass limits to 256 and 234 GeV/c2.
