A 51-year-old man has been arrested on suspicion of conspiracy to commit murder in connection with the shooting of a City trader.
Robin Clark, 44, who lives in Essex, was shot once in the leg as he got out of his car at Shenfield railway station on January 24.
The gunman ran off and left the scene in a car parked nearby.
A City brokerage firm has pledged to give one of their traders their full support after he was shot at Shenfield train station early this morning.
Robin Clark, 44, who works for brokerage firm RP Martin in London, was shot in the leg as he got out of his car.
A company spokesman said it was aware of the incident and was "giving Robin all the support we can."
Mr Clark was taken to Basildon Hospital where his condition was described as serious but not life-threatening.
A man who was shot at Shenfield train station early this morning has been named as Robin Clark.
The 44-year-old city banker suffered a serious leg injury after he was shot as he left his car shortly before 6am this morning.
Police said Mr Clark was approached by a man wearing a balacava who subsequently fled the scene.
A man has suffered serious injuries after he was shot in the leg at Shenfield rail station in Essex this morning.
The 44-year-old man received a single gunshot to his leg after he was approached by an unknown man wearing a balacava as he got out of his car shortly before 6am this morning.
The man was taken to hospital by ambulance with serious injuries which are not believed to be life-threatening.
British Transport Police confirmed that enquiries were ongoing to establish the motive and circumstances behind the attack, but did not confirm the vehicle or weapon used.
"At this stage we believe the victim of this assault was deliberately targeted. We do not believe this incident was gang-related and I would like to reassure the public that there is no reason for any undue concern," Detective Superintendent Gary Richardson said.
A passenger who tried to stop 5 men harassing a woman who was travelling alone on a train has been attacked and left with a broken nose.
Police have released CCTV images of five men they are trying to find.
Police searching for a missing 20 year old believe it was him who was hit and killed by a train in Shenfield on Christmas Eve.
Rodney Larsh from Chingford was reported missing at around 10:20 on Tuesday morning. A formal identification is yet to take place, but his family has been told.
Police are appealing for witnesses after a man approached a woman on a train in Essex and tried to kiss her. The 31-year-old victim was travelling between Shenfield and Billericay on Friday, 22 November at 9:20am.
A man of roughly the same age approached her and sat down. He then tried to kiss her before she pushed him away and ran from the train at Billericay.
Anyone with information should contact British Transport Police on Freefone 0800 40 50 40.