The 1st photo shows what seems to be a 'streak' (about to upper left corner and across to lower left.)
2nd photo Has nearly exactly the same image..only bigger from about mid door (lower left)
and down to the right and to the floor from the same dark tile starting point as in the 1st.
3rd photo has the exact same lines as the 1st two but also has moved, along
with the angle of the photo..and stops at the flooring.
Even though the 1st has a 'close-up' of the light streak...I feel what this is
is called lens flaring...I've had many photos of my own that were exactly that as well.
Keep up with taking photos and get whomever is also aware to take them as well.
Keep trying and you never know just what could actually show up,
especially 'around' your manager.