Kohen With Death in Apartment

I am a kohen living in a high rise apartment. Many, possibly most people in the building are Jewish, many elderly. I recently learned that an old Jewish lady in the building died. I never knew her personally. I don’t know exactly when she died or if I was at home at the time. But I went to the shiva and heard she died at home. I want to know for future reference, if someone dies in the building and I am aware of it, do I have to leave the building until the corpse is removed?