A Conservative MP named Luke Evans reported cyber-flashing and malicious communication to the police, becoming one of the potential victims in a suspected honeytrap plot targeting Westminster.
Up to 13 men, including a government minister and advisers, have received suspicious messages.
Some men were sent naked images, and two MPs responded by sending images of themselves.
This incident follows fellow Conservative MP William Wragg's apology for giving some MPs' personal phone numbers to a man on a gay dating app.
The Met Police is investigating reports of unsolicited explicit messages sent to multiple MPs over the past few months.
Leicestershire Police is also investigating a similar report of malicious communications made to them last month.
MP Tom Evans shared his own experience in a
Facebook video, stating that he was a victim of cyber-flashing and malicious communications a month ago.
He received an explicit image on WhatsApp and later received more messages, which he was able to record as evidence.
Mr. Evans reported receiving inappropriate messages to the police and Parliament's chief whip after being contacted on a dating app.
He wanted to keep the matter private due to an ongoing investigation but has since been hounded by journalists.
Mr. Wragg admitted sending MPs' numbers to someone he met on Grindr, stating he was scared because the individual had compromising information and wouldn't leave him alone.
Mr. Wragg, who is stepping down at the next election, expressed remorse for his actions and causing hurt to others.
The BBC reported that two individuals in political circles have been targeted by unwanted messages from strangers.
The first person, a former MP, received messages from someone named "Charlie" who falsely claimed they had worked together.
The messages were initially flirtatious but became explicit, leading the former MP to block the sender.
The second person, a staffer for an MP, was contacted last autumn by someone calling themselves "Abi," who claimed to know them from work and mentioned an event they had attended.
However, the staffer grew suspicious when "Abi" provided incorrect information and blocked them.
An MP named Mr. Wragg received unwanted messages from an unknown person for several months, despite ignoring them.
He later discovered that someone else had also received similar messages from the same number and picture.
Mr. Wragg's staff member expressed surprise if Mr. Wragg had the number and denied ever meeting him.
The House of Commons took the security issue seriously and provided tailored advice to MPs and staff to be aware of online risks.
Anyone affected and with concerns was encouraged to contact the Parliamentary Security Department.