The PHA represents major hotel and resort properties and over 14,000 rooms on Phuket.
“Phuket and its beaches are peaceful and guests continue to enjoy their holidays, relatively unaffected by the event last week,” said PHA President Anthony Lark in the statement.
“All hotels have implemented additional security measures and are in close communication with the local authorities for any updates.
“The majority of the membership hotels have not reported any significant loss of business from cancellations,” Mr Lark added.
“In the meantime, events and activities in celebration of Her Majesty the Queen’s Birthday Anniversary continue to take place throughout the country, and all airports and transport services are operating as normal.
“We will continue to closely monitor the situation and our members are being diligent in ensuring upgraded security measures in cooperation with the local authorities,” Mr Lark said.