Crews searching for Naya Rivera at Lake Piru will again check cabins, outbuildings and the surrounding area as efforts to find her entered its fifth day Sunday, the Ventura County Sheriff’s Office said.

“This has been part of the ongoing search effort since her disappearance on Wednesday afternoon,” the department said on Twitter.

Authorities warned those “intent on search for Naya Rivera on your own” about the rugged and steep terrain and the 90 degree-temperature, reminding the public that the lake has been closed since the operation began.

“Our teams are well equipped and highly trained,” the Sheriff’s Office said. “We don’t want to have to rescue you.”

Just after 9:30 p.m. Sunday, authorities called off search efforts for the night. They will continue Monday morning.

The Sheriff’s Office said last Thursday that they believe Rivera, 33, drowned in Lake Piru, northwest of Los Angeles. Her 4-year-old son was discovered alone in a rented boat.

The boy, who was found asleep and wearing a life vest late Wednesday afternoon, told investigators that he and his mother went swimming and he got back on the boat, but “his mom never made it out of the water,” Sheriff’s Sgt. Kevin Donoghue said.

Rivera began acting at a young age, but she rose to national attention playing a lesbian teen on “Glee,” which aired from 2009 until 2015 on Fox.