There was also heavy security in the crowded centre of Amman , where smaller clashes had erupted last Saturday , but Friday prayers at the main mosque ended quietly as police in full riot gear looked on .
<response> There was also heavy security in the crowded centre of <location>Amman</location> , where smaller clashes had erupted last Saturday , but Friday prayers at the main mosque ended quietly as police in full riot gear looked on . </response>