A man believed to have killed a Connecticut jeweler last week was seen in Philadelphia three days earlier, possibly casing stores on Jewelers' Row, police said Thursday.

The man, who wore a dark-colored flat cap and dark-framed eyeglasses, was recorded on surveillance video Dec. 5.

Police say he fatally shot Yekutiel Zeevi, 65, and wounded his business partner during an after-hours meeting Dec. 8 at their jewelry business in Westport, Conn. Police said the motive was robbery, but they have not confirmed what was taken.

When it was raining, the video showed the man carrying a dark umbrella with the Victorinox logo found on Swiss Army knives.

Authorities ask that anyone with information about the man call Westport police at 203-341-6080.

Contact staff writer Robert Moran at 215-854-5983, bmoran@phillynews.com, or @RobertMoran215 on Twitter.