More than 200,000 people in Huntsville will have restricted movement this summer as the housing authority imposes a curfew at its facilities.

A copy of a lease addendum dated June 5 and reviewed by AL.com says the curfew begins Monday until Sept. 30. Residents must sign the document by 5 p.m. Monday.

The authority said this week it was imposing a curfew on the LR Patton Community after a shooting last week killed one person and left another injured.

But in a letter that accompanied the addendum, the authority said the curfew will be at all facilities it controls, which according to its website houses 221,000 people in about 3,000 households in Alabama’s most populous city.

Huntsville Housing Authority did not immediately reply to a request for comment.

For the duration of the curfew, residents will be required to remain indoors from 9 p.m. to 6 a.m. Sunday through Thursday, and 10 p.m. to 6 a.m. on Friday and Saturday. The stated rationale is the need to ensure security.

The curfew applies to all outdoor areas of the premises, including porches, balconies, walkways, stairwells, courtyards, parking lots and any other common areas.

“During these hours, residents and their guests are allowed to come and go but are not allowed to casually hang out and may not be present outdoors or on porches unless a valid exception applies,” the addendum stated.

Penalties include a written warning, fines or penalties as determined by management and potential lease termination for repeated or serious violations.

“In light of the recent criminal activity in and around our communities and with the safety and well-being of our residents as our top priority, HHA has made the decision to implement a curfew for all residents across the Authority,” the HHA said in the statement that accompanied the lease addendum.

“This temporary measure will be enforced during the summer months to help prevent adverse environments and promote a safer living experience for everyone.”

Curfew exceptions include work-related obligations and emergency situations.