Out of his outrage, the brother of Berenice, Ptolemy III declared war and invaded the Seleucid Empire. His suspicions about the deaths of his sister and nephew were firmly grounded and were a part of the cause of the Third Syrian War also known as the ‘Laodicean War’ or the ‘War of Laodice’. Ptolemy captured Laodice and had her killed. This happened no earlier than 236 BC because there are two honorific inscriptions in Babylon dedicated to her dated to 247 BC and 237 BC. During the war, while Seleucus was fighting Ptolemy, Laodice supported the revolt of her second son against her first son. This occurred in 244 BC which caused a civil war for the next 17 years between Seleucus II and Antiochus Hierax.