Spain has found no evidence to conclude that July's deadly border rush from Morocco into its enclave of Ceuta was orchestrated by Moroccan authorities, Prime Minister Pedro Sanchez said on Thursday, countering allegations in a Spanish police report.Speaking in parliament, Sanchez responded to claims in the report that emerged this week suggesting the entry of over 70,000 people into Ceuta was not a spontaneous migration but a planned effort to overwhelm border controls."I can assure you that no institution – not the diplomatic service, nor the European Commission, nor any international body – has provided the Spanish government with any solid evidence that Morocco planned or carried out the incident. None whatsoever," Sanchez said.However, Moroccan police did allow crossings to occur during a key 10-hour period on July 30, when migrant arrivals peaked, he said. Spanish authorities had yet to determine whether this was due to inaction or inability to contain the influx, Sanchez added.Sanchez has repeatedly defended Morocco during the crisis, highlighting Rabat's cooperation in returning the majority of the migrants in the days following the surge.But on Thursday he said Spain summoned Morocco's ambassador on August 21 because of "unacceptable statements" made by two Moroccan ministers over Ceuta and Melilla, Spain's other North African enclave. Morocco's Justice Minister Abdellatif Ouahbi last month publicly reiterated Rabat's sovereignty claims over the cities.Fewer Moroccan police than usual at border