Sources say Beijing has fast-tracked key infrastructure projects in Myanmar, including Muse-Mandalay-Kyaukphyu railway and pipelines linked to China-Myanmar Economic Corridor.

Two young brothers, Braeden and Brock Davis, were attending another summer camp on the river, Camp La Junta, when the disaster unfolded.

Authorities vowed that one of the next steps would be investigating whether enough warnings were issued and why some camps ...