Autism Wairarapa Charitable Trust field worker Wendy Roesler showed up to work on Friday to find her desk covered in broken glass - and a road cone in the middle of the room.
Ms Roesler's Queen St office was one of several Masterton CBD businesses vandalised last week, and two where the perpetrators have left a traffic cone as a calling card.
Masterton police were called to the charitable trust's building and Kevin B Wong's dental practice on Renall St on Friday morning after staff reported broken windows, and appealed to the public for more information.
A spokesperson from Masterton District Council mentioned a window had been broken at the Masterton Town Hall on Thursday night, but this was not reported to police.
Ms Roesler said she received a call before work from a neighbouring shop, her trust's office window "had been smashed".