But at the same time the Austrians occupied Lucca and Livorno, and although Leopold simulated surprise at their action it has since been proved, as the Austrian general d'Aspre declared at the time, that Austrian intervention was due to the request of the grand-duke. On 24 May the latter appointed G Baldasseroni prime minister, on the 25th the Austrians entered Florence and on 28 July Leopold himself returned. In April 1850 he concluded a treaty with Austria sanctioning the continuation for an indefinite period of the Austrian occupation with 10,000 men; in September he dismissed parliament, and the next year established a concordat with the Church of a very clerical character. He feebly asked Austria if he might maintain the constitution, and the Austrian premier, Prince Felix of Schwarzenberg, advised him to consult the pope, the king of Naples and the dukes of Parma and Modena.