Some Indian states have said that they will extend Covid-19 lockdowns to help contain the pandemic as the federal government pledged to bolster vaccine supplies, Reuters reports.

The northern states of Delhi and Haryana extended lockdowns, slated to end on Monday, by a week. The southern state of Kerala, which had previously announced a lockdown extension, also introduced stricter restrictions in some districts on Saturday. It warned that people not wearing masks where required or violating quarantine protocols faced being arrested, with drones used to help identify violators.

The Indian government has said it will send an additional 5.1 million doses of Covid-19 vaccines to states over the next three days.