A hidden camera was found near the bathroom ventilator of the hostel on Friday.
Sreejith attacked his wife Jayashree (44) with a chopping knife while their daughter was looking on, police said.
At age seven, Martina was enrolled at ‘Ragam School of Music’ run by violinist Philip Fernandez, who is also the father of noted singer Sayanora Philip.
In the summoning letter, he has been instructed to appear at the Nadakkavu station on or before November 18 for the questioning.
Already facing a sexual assault case filed by a Saudi woman, he was in the dock again when Dharmadam police registered a POCSO case based on a complaint lodged by a woman.
As per FIR, after physically assaulting her with an iron rod, the man force-fed the girl weedicide.
The murder took place on January 17, 2019.
Reji was booked under IPC sections 354 and 506 for assaulting a woman with the intention to outrage her modesty and criminal intimidation.
The woman journalist had submitted a complaint to the City Police Commissioner on Saturday.
Kerala Women's Commission has sought a detailed report from the police and observed that it is a serious case.