Some suppliers to Chinese real estate developers are refusing to repay bank loans because of unpaid bills owed to them, a sign that the loan boycott that started with homebuyers is starting to spread.

Hundreds of contractors to the property industry complained that they can no longer afford to pay their own bills because developers including China Evergrande Group still owe them money, Caixin reported, citing a statement it received from a supplier Tuesday.

One group of small businesses and suppliers circulated a letter online saying they will stop repaying debts after Evergrande’s cash crisis left them out of pocket.