Police are releasing the names of two siblings who died in a Pawtucket car accident. Police say Derrick Joslyn and his sister, Tiffany Joslyn, were driving in a car with Derrick's wife when they were struck by another car on I-95 Saturday afternoon. Their car rolled and was hit by a van. Three other people were hospitalized with minor injuries. It's unknown if charges are being filed, but an investigation is ongoing.