Three police officers -- two NYPD off-duty cops who collided and an on-duty Suffolk County police officer -- were injured in separate weather-related accidents Sunday morning, authorities said.

The two-off duty NYPD officers were taken to separate hospitals Sunday morning after one of their personal vehicles crashed into the other on the Long Island Expressway, temporarily shutting down the highway eastbound.

The expressway has since been reopened in that area.

The Suffolk County police officer was injured Sunday morning in another weather-related accident after his patrol car was struck by a Dodge Ram truck that crossed into his lane on Route 25A in Miller Place, Suffolk police said.

In the LIE accident, the first NYPD officer was driving his sport utility vehicle east on the expressway between Exits 48 and 49 in Melville when the vehicle went out of control and struck the center divider, a Suffolk County police spokeswoman said.

When the officer got out of his vehicle to assess the damage, another off-duty NYPD officer, driving a pickup, hit a patch of ice and collided with the SUV.

The SUV in turn struck the first officer, who sustained a broken leg and facial fractures. The second male officer in the pickup truck sustained a concussion as well as minor injuries, officials said.

Minutes later, a third off-duty NYPD male officer stopped to help.

Shortly thereafter, another person driving an SUV sideswiped the first two vehicles due to the slippery expressway. Neither the third officer nor that person was taken to a hospital.

The officers have not been identified, Suffolk officials said.

The three officers did not appear to be traveling together, Suffolk officials said.

Suffolk police say there was no criminality involved in the crashes.

In Miller Place, a 2012 Dodge Ram was traveling east on Route 25A when it went out of control on an icy roadway and crossed into the westbound lane striking the squad car with the Suffolk officer inside, authorities said.

The officer was taken to Stony Brook University Hospital for treatment of a concussion and neck and back injuries around 8 a.m. His name was not released.

The husband and wife in the pickup truck suffered minor injuries and were taken to a hospital, police said.