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Context. Recent findings of line emission at 3.5 keV in both individual andstacked X-ray spectra of galaxy clusters have been speculated to have darkmatter origin. Aims. If the origin is indeed dark matter, the emission line isexpected to be detectable from the Milky Way dark matter halo. Methods. Weperform a line search in public Chandra X-ray observations of the region nearSgr A*. We derive upper limits on the line emission flux for the 2.0-9.0 keVenergy interval and discuss their potential physical interpretations includingvarious scenarios of decaying and annihilating dark matter. Results. While findno clear evidence for its presence, the upper flux limits are not inconsistentwith the recent detections for conservative mass profiles of the Milky Way.Conclusions. The results depends mildly on the spectral modelling and stronglyon the choice of dark matter profile.

Questioning a 3.5 keV dark matter emission line