HARTFORD, Conn. — Connecticut officials say swim areas at four state beaches have been closed after high levels of bacteria were found in the water.

The state Department of Energy and Environmental Protection says swim areas at Hammonasset Beach State Park and Silver Sands State Park are entirely closed, along with a portion of the swim area at Rocky Neck State Park. They will remain closed until at least noon Saturday.

High bacteria levels have also closed the swim area at Wadsworth Falls State Park until at least Aug. 31.

Officials say swim areas at Kettletown State Park and Indian Well State Park have also been closed because of the presence of toxic blue-green algae in the water. They will reopen when the algae subside.

Beaches at all other state parks remain open.