Residents near Medford's Union Park found the letters "KKK" burned into their front lawn late Monday, police say.

Residents near Medford's Union Park found the letters "KKK" burned into their front lawn late Monday, police say.

Officers who responded also found a small, improvised explosive device, which did not detonate, Medford police said in a press release today. Witnesses told officers they saw people running toward Union Park after the letters were found.

Police say they do not know the motive for the vandalism, but resident Sol White told police her husband is from Jamaica.

An investigation is continuing.

We'll have more details as they're available today.

— Staff and wire reports