On 29 June, a trumpeter again demanded the surrender of the city and de Fariaux again refused. Subsequently, the French batteries intensified their bombardment of both the inner city and the defence works. The batteries on the north slope of the Sint Pietersberg concentrated their fire on the southwest corner of the city wall which collapsed into the moat behind the Groene Halve Maan. This demi-lune was abandoned by the Dutch during the night of 29/30 June. As the situation of the garrison was hopeless, strong moral pressure was applied by the population to de Fariaux not to continue the fight. They reminded him that during the Siege of Maastricht of 1579, on the 29th of June the Spanish troops of Alexander Farnese, Duke of Parma began to sack the city, in three days murdering a thousand of its inhabitants. They begged him to prevent a repeat of these tragic events.