Conn. Gen. Stat. § 17a-282
No person admitted to a facility for persons with intellectual disability under the provisions of section 17a-281, shall be detained in such facility for more than seven days after such person or such person's legal representative has given notice in writing to the Commissioner of Developmental Services, of such person's intention or desire to leave such facility. If the commissioner is of the opinion that such person is in need of further treatment or observation, the commissioner may make and file, in the Probate Court for the district within which such person resides, an application for the involuntary placement of such person to such facility and the Probate Court shall proceed thereon in the same manner as is provided in section 17a-274.
Conn. Gen. Stat. § 17a-282
(1961, P.A. 260, S. 2; 1963, P.A. 377, S. 2; P.A. 75-638, S. 10, 23; P.A. 76-153, S. 9; P.A. 87-152, S. 2, 4; P.A. 07-73, S. 2 (b); P.A. 11-16, S. 30; P.A. 16-159, S. 1; P.A. 18-32, S. 29.)